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Clément Grennerat
2025-08-18 21:34:19 +02:00
commit 6e6abff60c
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Core/Src/LCD_driver.c
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// Driver afficheur ADA 1983/chip ILI9341 pour Kit STM32L476 IUT1 de Grenoble Dpt GEII
//
// Adaptations L476, et fusion libs : V. GRENNERAT, IUT1 de Grenoble, Dpt GEII
// Correction bug coordonnees X et Y pour Draw_Char et Draw_Text : V. GRENNERAT
// Ajout fonction LCD_Draw_Image_XY : V. GRENNERAT
// Intégration des fonctions de configuration SPI3 et GPIO : V. GRENNERAT
// Version 2 (1/12/2019) :
// Suppression de l'utilisation de la HAL STM32 : V. GRENNERAT
// Diverses optimisations, dans les burst images.
// --------------------------------
// MIT License
//
// Copyright (c) 2017 Matej Artnak
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
/* Includes ------------------------------------------------------------------*/
#include "LCD_driver.h"
#include "5x5_font.h"
#include "stm32f1xx.h"
/* Global Variables ------------------------------------------------------------------*/
volatile uint16_t LCD_HEIGHT = LCD_SCREEN_HEIGHT;
volatile uint16_t LCD_WIDTH = LCD_SCREEN_WIDTH;
/* SPI3 & GPIOs init function */
void LCD_SPI_Init(void)
{
//__HAL_RCC_SPI3_CLK_ENABLE();
RCC->APB1ENR1 |= RCC_APB1ENR1_SPI3EN; // SPI3 clock enable
RCC->AHB2ENR |= RCC_AHB2ENR_GPIOCEN; // GPIOC clock enable
/** CS & DC GPIO signals configuration
PC8 ------> LCD_CS_PIN
PC11 ------> LCD_DC_PIN
*/
GPIOC->BSRR = LCD_CS_PIN | (LCD_DC_PIN <<16); //CS à 1 et DC à 0
GPIOC->MODER |= (1<<16)|(1<<22); //GPIO out
GPIOC->MODER &= ~((1<<17)|(1<<23)); //mise à 0
GPIOC->OTYPER &= (GPIO_OTYPER_OT8 | GPIO_OTYPER_OT11); //PC8 & 11 en PP
GPIOC->OSPEEDR |= (3<<16) | (3<<22); //High speed
/**SPI3 GPIO Configuration
PC10 ------> SPI3_SCK
PC12 ------> SPI3_MOSI */
GPIOC->AFR[1] |= (6 << 8)|(6 << 16); //PC10 en AF6 : SPI3_SCK, PC12 en AF6 : SPI3_MOSI
GPIOC->AFR[1] &= 0xFFF6F6FF; //Mise à 0
GPIOC->MODER |= (2<<20)|(2<<24); //MODE AF
GPIOC->MODER &= 0xFEEFFFFF; //Mise à 0
GPIOC->OTYPER &= (GPIO_OTYPER_OT10 | GPIO_OTYPER_OT12); //PC10 & 12 en PP
GPIOC->OSPEEDR |= (3<<24) | (3<<20); //High speed
/*Configure module SPI3*/
SPI3->CR1=SPI_CR1_SSM | SPI_CR1_SSI; //CS soft, SSI à 1 sinon decl. mode fault
SPI3->CR1|=SPI_CR1_MSTR; // 0 sauf SPE et mode Master, BR = 0 => /2=> Fsck=40M
SPI3->CR2=0x0700 | SPI_CR2_FRXTH;// | SPI_CR2_NSSP; //mode 8 bits, ITs disabled, no DMA, FRXTH doit être à 1 en 8 bits
SPI3->CR1|=SPI_CR1_SPE;
}
/* Send command (char) to LCD via SPI bus */
void LCD_Write_Command(uint8_t Command)
{
// principe : on attend toujours la fin du transfert, à cause du CS_OFF soft qui arrive après.
// donc à priori pas besoin de tester l'état du buffer TX avant l'envoi :
// le buffer devrait toujours vide
CMD; //Ligne de commande a '1'
//CS_ON;
while ((SPI1->SR & SPI_SR_TXE) != 0); // SPI_SR_BSY si besoin d’attendre la fin complète de l’envoi des trames SPI.
*(uint8_t *)(SPI1_DR_ADR) = Command; //Cast sur pointeur, pour ecriture 8 bits. Sinon l'acces 16 bits provoque un tfert 16 bits
//CS_OFF;
}
/* Send Data (char) to LCD via SPI bus */
void LCD_Write_Data(uint8_t Data)
{
DATA; //Ligne de data a '1'
CS_ON;
*(uint8_t *)(SPI1_DR_ADR) = Data;
while ((SPI1->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame (cf RM P1289)
CS_OFF;
}
/* Set Address - Location block - to draw into */
void LCD_Set_Address(uint16_t X1, uint16_t Y1, uint16_t X2, uint16_t Y2)
{
LCD_Write_Command(0x2A);
LCD_Write_Data(X1>>8);
LCD_Write_Data(X1);
LCD_Write_Data(X2>>8);
LCD_Write_Data(X2);
LCD_Write_Command(0x2B);
LCD_Write_Data(Y1>>8);
LCD_Write_Data(Y1);
LCD_Write_Data(Y2>>8);
LCD_Write_Data(Y2);
LCD_Write_Command(0x2C);
}
/*HARDWARE RESET*/
//Reset n'est pas cable sur aff ADA1983
// void LCD_Reset(void)
// {
// HAL_GPIO_WritePin(LCD_RST_PORT, LCD_RST_PIN, GPIO_PIN_SET);
// HAL_Delay(200);
// CS_ON;
// HAL_Delay(200);
// HAL_GPIO_WritePin(LCD_RST_PORT, LCD_RST_PIN, GPIO_PIN_SET);
// }
/*Ser rotation of the screen - changes x0 and y0*/
void LCD_Set_Rotation(uint8_t Rotation)
{
uint8_t screen_rotation = Rotation;
LCD_Write_Command(0x36);
for(volatile uint32_t i=0;i<TEMPO1MS_80M;i++); //~1ms attente
switch(screen_rotation)
{
case SCREEN_VERTICAL_1:
LCD_Write_Data(0x40|0x08);
LCD_WIDTH = 240;
LCD_HEIGHT = 320;
break;
case SCREEN_HORIZONTAL_1:
LCD_Write_Data(0x20|0x08);
LCD_WIDTH = 320;
LCD_HEIGHT = 240;
break;
case SCREEN_VERTICAL_2:
LCD_Write_Data(0x80|0x08);
LCD_WIDTH = 240;
LCD_HEIGHT = 320;
break;
case SCREEN_HORIZONTAL_2:
LCD_Write_Data(0x40|0x80|0x20|0x08);
LCD_WIDTH = 320;
LCD_HEIGHT = 240;
break;
default:
//EXIT IF SCREEN ROTATION NOT VALID!
break;
}
}
/*Enable LCD display*/
//Reset n'est pas cable sur aff ADA1983
// void LCD_Enable(void)
// {
// HAL_GPIO_WritePin(LCD_RST_PORT, LCD_RST_PIN, GPIO_PIN_SET);
// }
/*Initialize LCD display*/
void LCD_Init(void)
{
volatile uint32_t i; //Boucle att
//Reset n'est pas cable sur aff ADA1983
//LCD_Enable();
LCD_SPI_Init();
//LCD_Reset();
//SOFTWARE RESET
LCD_Write_Command(0x01);
for(i=0; i<(1000*TEMPO1MS_80M); i++); //~1s attente @80M
//POWER CONTROL A
LCD_Write_Command(0xCB);
LCD_Write_Data(0x39);
LCD_Write_Data(0x2C);
LCD_Write_Data(0x00);
LCD_Write_Data(0x34);
LCD_Write_Data(0x02);
//POWER CONTROL B
LCD_Write_Command(0xCF);
LCD_Write_Data(0x00);
LCD_Write_Data(0xC1);
LCD_Write_Data(0x30);
//DRIVER TIMING CONTROL A
LCD_Write_Command(0xE8);
LCD_Write_Data(0x85);
LCD_Write_Data(0x00);
LCD_Write_Data(0x78);
//DRIVER TIMING CONTROL B
LCD_Write_Command(0xEA);
LCD_Write_Data(0x00);
LCD_Write_Data(0x00);
//POWER ON SEQUENCE CONTROL
LCD_Write_Command(0xED);
LCD_Write_Data(0x64);
LCD_Write_Data(0x03);
LCD_Write_Data(0x12);
LCD_Write_Data(0x81);
//PUMP RATIO CONTROL
LCD_Write_Command(0xF7);
LCD_Write_Data(0x20);
//POWER CONTROL,VRH[5:0]
LCD_Write_Command(0xC0);
LCD_Write_Data(0x23);
//POWER CONTROL,SAP[2:0];BT[3:0]
LCD_Write_Command(0xC1);
LCD_Write_Data(0x10);
//VCM CONTROL
LCD_Write_Command(0xC5);
LCD_Write_Data(0x3E);
LCD_Write_Data(0x28);
//VCM CONTROL 2
LCD_Write_Command(0xC7);
LCD_Write_Data(0x86);
//MEMORY ACCESS CONTROL
LCD_Write_Command(0x36);
LCD_Write_Data(0x48);
//PIXEL FORMAT
LCD_Write_Command(0x3A);
LCD_Write_Data(0x55);
//FRAME RATIO CONTROL, STANDARD RGB COLOR
LCD_Write_Command(0xB1);
LCD_Write_Data(0x00);
LCD_Write_Data(0x18);
//DISPLAY FUNCTION CONTROL
LCD_Write_Command(0xB6);
LCD_Write_Data(0x08);
LCD_Write_Data(0x82);
LCD_Write_Data(0x27);
//3GAMMA FUNCTION DISABLE
LCD_Write_Command(0xF2);
LCD_Write_Data(0x00);
//GAMMA CURVE SELECTED
LCD_Write_Command(0x26);
LCD_Write_Data(0x01);
//POSITIVE GAMMA CORRECTION
LCD_Write_Command(0xE0);
LCD_Write_Data(0x0F);
LCD_Write_Data(0x31);
LCD_Write_Data(0x2B);
LCD_Write_Data(0x0C);
LCD_Write_Data(0x0E);
LCD_Write_Data(0x08);
LCD_Write_Data(0x4E);
LCD_Write_Data(0xF1);
LCD_Write_Data(0x37);
LCD_Write_Data(0x07);
LCD_Write_Data(0x10);
LCD_Write_Data(0x03);
LCD_Write_Data(0x0E);
LCD_Write_Data(0x09);
LCD_Write_Data(0x00);
//NEGATIVE GAMMA CORRECTION
LCD_Write_Command(0xE1);
LCD_Write_Data(0x00);
LCD_Write_Data(0x0E);
LCD_Write_Data(0x14);
LCD_Write_Data(0x03);
LCD_Write_Data(0x11);
LCD_Write_Data(0x07);
LCD_Write_Data(0x31);
LCD_Write_Data(0xC1);
LCD_Write_Data(0x48);
LCD_Write_Data(0x08);
LCD_Write_Data(0x0F);
LCD_Write_Data(0x0C);
LCD_Write_Data(0x31);
LCD_Write_Data(0x36);
LCD_Write_Data(0x0F);
//EXIT SLEEP
LCD_Write_Command(0x11);
for(i=0; i<(120/TEMPO1MS_80M); i++); //~120ms attente
//TURN ON DISPLAY
LCD_Write_Command(0x29);
//STARTING ROTATION
LCD_Set_Rotation(SCREEN_HORIZONTAL_1);
}
//INTERNAL FUNCTION OF LIBRARY
/*Sends block colour information to LCD*/
void LCD_Draw_Colour_Burst(uint16_t Colour, uint32_t Size)
{
short bufColour;
// On envoie la même couleur sur Size pixels
bufColour = Colour>>8; // pour le tfert dans DR en 1 seul write mais
bufColour |= Colour<<8; // en mode 8 bits, il faut inverser les octets MSB/LSB
DATA;
CS_ON;
for(uint32_t j=0;j<Size;j++){
while((SPI3->SR & SPI_SR_TXE) == 0); //Si FIFO full (TX buffer Empty=0), on attend
SPI3->DR = bufColour;
}
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
}
//FILL THE ENTIRE SCREEN WITH SELECTED COLOUR (either #define-d ones or custom 16bit)
/*Sets address (entire screen) and Sends Height*Width ammount of colour information to LCD*/
void LCD_Fill_Screen(uint16_t Colour)
{
LCD_Set_Address(0,0,LCD_WIDTH,LCD_HEIGHT);
LCD_Draw_Colour_Burst(Colour, LCD_WIDTH*LCD_HEIGHT);
}
//DRAW PIXEL AT XY POSITION WITH SELECTED COLOUR
//
//Location is dependant on screen orientation. x0 and y0 locations change with orientations.
//Using pixels to draw big simple structures is not recommended as it is really slow
//Try using either rectangles or lines if possible
//
void LCD_Draw_Pixel(uint16_t X,uint16_t Y,uint16_t Colour)
{
if((X >=LCD_WIDTH) || (Y >=LCD_HEIGHT)) return; //OUT OF BOUNDS!
//ADDRESS
LCD_Write_Command(0x2A);
//XDATA
DATA;
CS_ON;
SPI3->DR = (X>>8) | (X<<8); //inversion MSB / LSB pour envoi des 2 mots 8 bits en 1W 16bits
//Pas d'att si FIFO full (TX buffer Empty=0) car juste 2 écriture 16 bits tiennent dans FIFO
SPI3->DR = ((X+1)>>8) | ((X+1)<<8);
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
//ADDRESS
LCD_Write_Command(0x2B);
//YDATA
DATA;
CS_ON;
SPI3->DR = (Y>>8) | (Y<<8);
SPI3->DR = ((Y+1)>>8) | ((Y+1)<<8);
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
//ADDRESS
LCD_Write_Command(0x2C);
//COLOUR
DATA;
CS_ON;
SPI3->DR = (Colour>>8) | (Colour<<8);
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
}
//DRAW RECTANGLE OF SET SIZE AND HEIGTH AT X and Y POSITION WITH CUSTOM COLOUR
//
//Rectangle is hollow. X and Y positions mark the upper left corner of rectangle
//As with all other draw calls x0 and y0 locations dependant on screen orientation
//
void LCD_Draw_Rectangle(uint16_t X, uint16_t Y, uint16_t Width, uint16_t Height, uint16_t Colour)
{
if((X >=LCD_WIDTH) || (Y >=LCD_HEIGHT)) return;
if((X+Width-1)>=LCD_WIDTH)
{
Width=LCD_WIDTH-X;
}
if((Y+Height-1)>=LCD_HEIGHT)
{
Height=LCD_HEIGHT-Y;
}
LCD_Set_Address(X, Y, X+Width-1, Y+Height-1);
LCD_Draw_Colour_Burst(Colour, Height*Width);
}
//DRAW LINE FROM X,Y LOCATION to X+Width,Y LOCATION
void LCD_Draw_Horizontal_Line(uint16_t X, uint16_t Y, uint16_t Width, uint16_t Colour)
{
if((X >=LCD_WIDTH) || (Y >=LCD_HEIGHT)) return;
if((X+Width-1)>=LCD_WIDTH)
{
Width=LCD_WIDTH-X;
}
LCD_Set_Address(X, Y, X+Width-1, Y);
LCD_Draw_Colour_Burst(Colour, Width);
}
//DRAW LINE FROM X,Y LOCATION to X,Y+Height LOCATION
void LCD_Draw_Vertical_Line(uint16_t X, uint16_t Y, uint16_t Height, uint16_t Colour)
{
if((X >=LCD_WIDTH) || (Y >=LCD_HEIGHT)) return;
if((Y+Height-1)>=LCD_HEIGHT)
{
Height=LCD_HEIGHT-Y;
}
LCD_Set_Address(X, Y, X, Y+Height-1);
LCD_Draw_Colour_Burst(Colour, Height);
}
/*********************Partie de la Lib issue de LCD_GFX**************************/
/*Draw hollow circle at X,Y location with specified radius and colour. X and Y represent circles center */
void LCD_Draw_Hollow_Circle(uint16_t X, uint16_t Y, uint16_t Radius, uint16_t Colour)
{
int x = Radius-1;
int y = 0;
int dx = 1;
int dy = 1;
int err = dx - (Radius << 1);
while (x >= y)
{
LCD_Draw_Pixel(X + x, Y + y, Colour);
LCD_Draw_Pixel(X + y, Y + x, Colour);
LCD_Draw_Pixel(X - y, Y + x, Colour);
LCD_Draw_Pixel(X - x, Y + y, Colour);
LCD_Draw_Pixel(X - x, Y - y, Colour);
LCD_Draw_Pixel(X - y, Y - x, Colour);
LCD_Draw_Pixel(X + y, Y - x, Colour);
LCD_Draw_Pixel(X + x, Y - y, Colour);
if (err <= 0)
{
y++;
err += dy;
dy += 2;
}
if (err > 0)
{
x--;
dx += 2;
err += (-Radius << 1) + dx;
}
}
}
/*Draw filled circle at X,Y location with specified radius and colour. X and Y represent circles center */
void LCD_Draw_Filled_Circle(uint16_t X, uint16_t Y, uint16_t Radius, uint16_t Colour)
{
int x = Radius;
int y = 0;
int xChange = 1 - (Radius << 1);
int yChange = 0;
int radiusError = 0;
while (x >= y)
{
for (int i = X - x; i <= X + x; i++)
{
LCD_Draw_Pixel(i, Y + y,Colour);
LCD_Draw_Pixel(i, Y - y,Colour);
}
for (int i = X - y; i <= X + y; i++)
{
LCD_Draw_Pixel(i, Y + x,Colour);
LCD_Draw_Pixel(i, Y - x,Colour);
}
y++;
radiusError += yChange;
yChange += 2;
if (((radiusError << 1) + xChange) > 0)
{
x--;
radiusError += xChange;
xChange += 2;
}
}
//Really slow implementation, will require future overhaul
//TODO: https://stackoverflow.com/questions/1201200/fast-algorithm-for-drawing-filled-circles
}
/*Draw a hollow rectangle between positions X0,Y0 and X1,Y1 with specified colour*/
void LCD_Draw_Hollow_Rectangle_Coord(uint16_t X0, uint16_t Y0, uint16_t X1, uint16_t Y1, uint16_t Colour)
{
uint16_t X_length = 0;
uint16_t Y_length = 0;
uint8_t Negative_X = 0;
uint8_t Negative_Y = 0;
float Calc_Negative = 0;
Calc_Negative = X1 - X0;
if(Calc_Negative < 0) Negative_X = 1;
Calc_Negative = 0;
Calc_Negative = Y1 - Y0;
if(Calc_Negative < 0) Negative_Y = 1;
//DRAW HORIZONTAL!
if(!Negative_X)
{
X_length = X1 - X0;
}
else
{
X_length = X0 - X1;
}
LCD_Draw_Horizontal_Line(X0, Y0, X_length, Colour);
LCD_Draw_Horizontal_Line(X0, Y1, X_length, Colour);
//DRAW VERTICAL!
if(!Negative_Y)
{
Y_length = Y1 - Y0;
}
else
{
Y_length = Y0 - Y1;
}
LCD_Draw_Vertical_Line(X0, Y0, Y_length, Colour);
LCD_Draw_Vertical_Line(X1, Y0, Y_length, Colour);
if((X_length > 0)||(Y_length > 0))
{
LCD_Draw_Pixel(X1, Y1, Colour);
}
}
/*Draw a filled rectangle between positions X0,Y0 and X1,Y1 with specified colour*/
void LCD_Draw_Filled_Rectangle_Coord(uint16_t X0, uint16_t Y0, uint16_t X1, uint16_t Y1, uint16_t Colour)
{
uint16_t X_length = 0;
uint16_t Y_length = 0;
uint8_t Negative_X = 0;
uint8_t Negative_Y = 0;
int32_t Calc_Negative = 0;
uint16_t X0_true = 0;
uint16_t Y0_true = 0;
Calc_Negative = X1 - X0;
if(Calc_Negative < 0) Negative_X = 1;
Calc_Negative = 0;
Calc_Negative = Y1 - Y0;
if(Calc_Negative < 0) Negative_Y = 1;
//DRAW HORIZONTAL!
if(!Negative_X)
{
X_length = X1 - X0;
X0_true = X0;
}
else
{
X_length = X0 - X1;
X0_true = X1;
}
//DRAW VERTICAL!
if(!Negative_Y)
{
Y_length = Y1 - Y0;
Y0_true = Y0;
}
else
{
Y_length = Y0 - Y1;
Y0_true = Y1;
}
LCD_Draw_Rectangle(X0_true, Y0_true, X_length, Y_length, Colour);
}
/*Draws a character (fonts imported from fonts.h) at X,Y location with specified font colour, size and Background colour*/
/*See fonts.h implementation of font on what is required for changing to a different font when switching fonts libraries*/
void LCD_Draw_Char(char Character, uint16_t X, uint16_t Y, uint16_t Colour, uint16_t Size, uint16_t Background_Colour)
{
uint8_t function_char;
uint8_t i,j;
function_char = Character;
if (function_char < ' ') {
Character = 0;
} else {
function_char -= 32;
}
char temp[CHAR_WIDTH];
for(uint8_t k = 0; k<CHAR_WIDTH; k++)
{
temp[k] = font[function_char][k];
}
// Draw pixels
LCD_Draw_Rectangle(X, Y, CHAR_WIDTH*Size, CHAR_HEIGHT*Size, Background_Colour);
for (j=0; j<CHAR_WIDTH; j++) {
for (i=0; i<CHAR_HEIGHT; i++) {
if (temp[j] & (1<<i)) {
if(Size == 1)
{
LCD_Draw_Pixel(X+j, Y+i, Colour);
}
else
{
LCD_Draw_Rectangle(X+(j*Size), Y+(i*Size), Size, Size, Colour);
}
}
}
}
}
/*Draws an array of characters (fonts imported from fonts.h) at X,Y location with specified font colour, size and Background colour*/
/*See fonts.h implementation of font on what is required for changing to a different font when switching fonts libraries*/
void LCD_Draw_Text(const char* Text, uint16_t X, uint16_t Y, uint16_t Colour, uint16_t Size, uint16_t Background_Colour)
{
while (*Text) {
LCD_Draw_Char(*Text++, X, Y, Colour, Size, Background_Colour);
X += CHAR_WIDTH*Size;
}
}
/*Dessine une image dans une zone de l'ecran, aux coordonnées X et Y*/
//CONVERTISSEUR: http://www.digole.com/tools/PicturetoC_Hex_converter.php
//65K colour (2Bytes / Pixel)
void LCD_Draw_Image_XY(const char* Image_Array, uint16_t X, uint16_t Y, uint16_t Width, uint16_t Height)
{
LCD_Set_Address(X,Y,X+Width-1,Y+Height-1);
DATA;
CS_ON;
for(uint32_t i = 0; i < Width*Height*2; i+=2)
{
while((SPI3->SR & SPI_SR_TXE) == 0); //Si FIFO full (TX buffer Empty=0), on attend
// on utilise l'ecriture 16 bits dans DR, pour des envois 8 bits
// Le LSB doit etre place ds le MSB :
SPI3->DR = ((short)Image_Array[i+1])<<8 | Image_Array[i];
}
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
}
/*Draws a full screen picture from flash. Image converted from RGB .jpeg/other to C array using online converter*/
//USING CONVERTER: http://www.digole.com/tools/PicturetoC_Hex_converter.php
//65K colour (2Bytes / Pixel)
void LCD_Draw_Image_Full(const char* Image_Array, uint8_t Orientation)
{
switch(Orientation)
{
case SCREEN_HORIZONTAL_1 :
LCD_Set_Rotation(SCREEN_HORIZONTAL_1);
LCD_Set_Address(0,0,LCD_SCREEN_WIDTH,LCD_SCREEN_HEIGHT);
break;
case SCREEN_HORIZONTAL_2 :
LCD_Set_Rotation(SCREEN_HORIZONTAL_2);
LCD_Set_Address(0,0,LCD_SCREEN_WIDTH,LCD_SCREEN_HEIGHT);
break;
case SCREEN_VERTICAL_1 :
LCD_Set_Rotation(SCREEN_VERTICAL_1);
LCD_Set_Address(0,0,LCD_SCREEN_HEIGHT,LCD_SCREEN_WIDTH);
break;
case SCREEN_VERTICAL_2 :
LCD_Set_Rotation(SCREEN_VERTICAL_2);
LCD_Set_Address(0,0,LCD_SCREEN_HEIGHT,LCD_SCREEN_WIDTH);
break;
}
DATA;
CS_ON;
for(uint32_t i = 0; i < LCD_SCREEN_WIDTH*LCD_SCREEN_HEIGHT*2; i+=2)
{
while((SPI3->SR & SPI_SR_TXE) == 0); //Si FIFO full (TX buffer Empty=0), on attend
// on utilise l'ecriture 16 bits dans DR, pour des envois 8 bits
// Le LSB doit etre place ds le MSB :
SPI3->DR = ((short)Image_Array[i+1])<<8 | Image_Array[i];
}
while ((SPI3->SR & SPI_SR_BSY) != 0); //Attendre fin envoi trame
CS_OFF;
}
Core/Src/crc.cpp
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/*
Copyright 2016 Benjamin Vedder benjamin@vedder.se
This file is part of the VESC firmware.
The VESC firmware is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The VESC firmware is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "crc.h"
// CRC Table
const unsigned short crc16_tab[] = { 0x0000, 0x1021, 0x2042, 0x3063, 0x4084,
0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad,
0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7,
0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a,
0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672,
0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719,
0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7,
0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948,
0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50,
0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b,
0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97,
0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe,
0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca,
0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3,
0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d,
0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214,
0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c,
0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3,
0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d,
0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806,
0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e,
0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1,
0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b,
0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0,
0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 };
unsigned short crc16(unsigned char *buf, unsigned int len) {
unsigned int i;
unsigned short cksum = 0;
for (i = 0; i < len; i++) {
cksum = crc16_tab[(((cksum >> 8) ^ *buf++) & 0xFF)] ^ (cksum << 8);
}
return cksum;
}
Core/Src/main.c
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "LCD_driver.h"
#include "5x5_font.h"
#include "LogoIUT.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI1_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief SPI1 Initialization Function
* @param None
* @retval None
*/
static void MX_SPI1_Init(void)
{
/* USER CODE BEGIN SPI1_Init 0 */
/* USER CODE END SPI1_Init 0 */
/* USER CODE BEGIN SPI1_Init 1 */
/* USER CODE END SPI1_Init 1 */
/* SPI1 parameter configuration*/
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_HARD_OUTPUT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI1_Init 2 */
/* USER CODE END SPI1_Init 2 */
}
/**
* @brief USART1 Initialization Function
* @param None
* @retval None
*/
static void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOC, DB10_Pin|DB8_Pin|DB6_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOD, DB4_Pin|DB2_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, DB0_Pin|DRESET_Pin|DCX_Pin|IM2_Pin
|IM1_Pin|PB14_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, DB1_Pin|DB3_Pin|DB5_Pin|DB7_Pin
|DB9_Pin|DB11_Pin|DB13_Pin|DB15_Pin
|IM0_Pin|DRDX_Pin|DB12_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : DB10_Pin DB8_Pin DB6_Pin */
GPIO_InitStruct.Pin = DB10_Pin|DB8_Pin|DB6_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pins : DB4_Pin DB2_Pin */
GPIO_InitStruct.Pin = DB4_Pin|DB2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/*Configure GPIO pins : DB0_Pin DRESET_Pin DCX_Pin IM2_Pin
PB14_Pin */
GPIO_InitStruct.Pin = DB0_Pin|DRESET_Pin|DCX_Pin|IM2_Pin
|PB14_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : DTE_Pin */
GPIO_InitStruct.Pin = DTE_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(DTE_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : DB1_Pin DB3_Pin DB5_Pin DB7_Pin
DB9_Pin DB11_Pin DB13_Pin DB15_Pin
IM0_Pin DRDX_Pin DB12_Pin */
GPIO_InitStruct.Pin = DB1_Pin|DB3_Pin|DB5_Pin|DB7_Pin
|DB9_Pin|DB11_Pin|DB13_Pin|DB15_Pin
|IM0_Pin|DRDX_Pin|DB12_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/*Configure GPIO pin : IM1_Pin */
GPIO_InitStruct.Pin = IM1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(IM1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : PA11 */
GPIO_InitStruct.Pin = GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : PA12 */
GPIO_InitStruct.Pin = GPIO_PIN_12;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure peripheral I/O remapping */
__HAL_AFIO_REMAP_PD01_ENABLE();
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
Core/Src/stm32f1xx_hal_msp.c
+230
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32f1xx_hal_msp.c
* @brief This file provides code for the MSP Initialization
* and de-Initialization codes.
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */
/* USER CODE END Define */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */
/* USER CODE END Macro */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */
/* USER CODE END ExternalFunctions */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_AFIO_CLK_ENABLE();
__HAL_RCC_PWR_CLK_ENABLE();
/* System interrupt init*/
/** DISABLE: JTAG-DP Disabled and SW-DP Disabled
*/
__HAL_AFIO_REMAP_SWJ_DISABLE();
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
/**
* @brief SPI MSP Initialization
* This function configures the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA4 ------> SPI1_NSS
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
}
/**
* @brief SPI MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspDeInit 0 */
/* USER CODE END SPI1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA4 ------> SPI1_NSS
PA5 ------> SPI1_SCK
PA6 ------> SPI1_MISO
PA7 ------> SPI1_MOSI
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
/* USER CODE BEGIN SPI1_MspDeInit 1 */
/* USER CODE END SPI1_MspDeInit 1 */
}
}
/**
* @brief UART MSP Initialization
* This function configures the hardware resources used in this example
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspInit(UART_HandleTypeDef* huart)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(huart->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspInit 0 */
/* USER CODE END USART1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**USART1 GPIO Configuration
PB6 ------> USART1_TX
PB7 ------> USART1_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
__HAL_AFIO_REMAP_USART1_ENABLE();
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
}
}
/**
* @brief UART MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param huart: UART handle pointer
* @retval None
*/
void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
{
if(huart->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspDeInit 0 */
/* USER CODE END USART1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART1_CLK_DISABLE();
/**USART1 GPIO Configuration
PB6 ------> USART1_TX
PB7 ------> USART1_RX
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6|GPIO_PIN_7);
/* USER CODE BEGIN USART1_MspDeInit 1 */
/* USER CODE END USART1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
Core/Src/stm32f1xx_it.c
+203
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32f1xx_it.c
* @brief Interrupt Service Routines.
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/* External variables --------------------------------------------------------*/
/* USER CODE BEGIN EV */
/* USER CODE END EV */
/******************************************************************************/
/* Cortex-M3 Processor Interruption and Exception Handlers */
/******************************************************************************/
/**
* @brief This function handles Non maskable interrupt.
*/
void NMI_Handler(void)
{
/* USER CODE BEGIN NonMaskableInt_IRQn 0 */
/* USER CODE END NonMaskableInt_IRQn 0 */
/* USER CODE BEGIN NonMaskableInt_IRQn 1 */
while (1)
{
}
/* USER CODE END NonMaskableInt_IRQn 1 */
}
/**
* @brief This function handles Hard fault interrupt.
*/
void HardFault_Handler(void)
{
/* USER CODE BEGIN HardFault_IRQn 0 */
/* USER CODE END HardFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_HardFault_IRQn 0 */
/* USER CODE END W1_HardFault_IRQn 0 */
}
}
/**
* @brief This function handles Memory management fault.
*/
void MemManage_Handler(void)
{
/* USER CODE BEGIN MemoryManagement_IRQn 0 */
/* USER CODE END MemoryManagement_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
/* USER CODE END W1_MemoryManagement_IRQn 0 */
}
}
/**
* @brief This function handles Prefetch fault, memory access fault.
*/
void BusFault_Handler(void)
{
/* USER CODE BEGIN BusFault_IRQn 0 */
/* USER CODE END BusFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_BusFault_IRQn 0 */
/* USER CODE END W1_BusFault_IRQn 0 */
}
}
/**
* @brief This function handles Undefined instruction or illegal state.
*/
void UsageFault_Handler(void)
{
/* USER CODE BEGIN UsageFault_IRQn 0 */
/* USER CODE END UsageFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_UsageFault_IRQn 0 */
/* USER CODE END W1_UsageFault_IRQn 0 */
}
}
/**
* @brief This function handles System service call via SWI instruction.
*/
void SVC_Handler(void)
{
/* USER CODE BEGIN SVCall_IRQn 0 */
/* USER CODE END SVCall_IRQn 0 */
/* USER CODE BEGIN SVCall_IRQn 1 */
/* USER CODE END SVCall_IRQn 1 */
}
/**
* @brief This function handles Debug monitor.
*/
void DebugMon_Handler(void)
{
/* USER CODE BEGIN DebugMonitor_IRQn 0 */
/* USER CODE END DebugMonitor_IRQn 0 */
/* USER CODE BEGIN DebugMonitor_IRQn 1 */
/* USER CODE END DebugMonitor_IRQn 1 */
}
/**
* @brief This function handles Pendable request for system service.
*/
void PendSV_Handler(void)
{
/* USER CODE BEGIN PendSV_IRQn 0 */
/* USER CODE END PendSV_IRQn 0 */
/* USER CODE BEGIN PendSV_IRQn 1 */
/* USER CODE END PendSV_IRQn 1 */
}
/**
* @brief This function handles System tick timer.
*/
void SysTick_Handler(void)
{
/* USER CODE BEGIN SysTick_IRQn 0 */
/* USER CODE END SysTick_IRQn 0 */
HAL_IncTick();
/* USER CODE BEGIN SysTick_IRQn 1 */
/* USER CODE END SysTick_IRQn 1 */
}
/******************************************************************************/
/* STM32F1xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32f1xx.s). */
/******************************************************************************/
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
Core/Src/syscalls.c
+176
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@@ -0,0 +1,176 @@
/**
******************************************************************************
* @file syscalls.c
* @author Auto-generated by STM32CubeIDE
* @brief STM32CubeIDE Minimal System calls file
*
* For more information about which c-functions
* need which of these lowlevel functions
* please consult the Newlib libc-manual
******************************************************************************
* @attention
*
* Copyright (c) 2020-2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
/* Variables */
extern int __io_putchar(int ch) __attribute__((weak));
extern int __io_getchar(void) __attribute__((weak));
char *__env[1] = { 0 };
char **environ = __env;
/* Functions */
void initialise_monitor_handles()
{
}
int _getpid(void)
{
return 1;
}
int _kill(int pid, int sig)
{
(void)pid;
(void)sig;
errno = EINVAL;
return -1;
}
void _exit (int status)
{
_kill(status, -1);
while (1) {} /* Make sure we hang here */
}
__attribute__((weak)) int _read(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
*ptr++ = __io_getchar();
}
return len;
}
__attribute__((weak)) int _write(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}
int _close(int file)
{
(void)file;
return -1;
}
int _fstat(int file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _isatty(int file)
{
(void)file;
return 1;
}
int _lseek(int file, int ptr, int dir)
{
(void)file;
(void)ptr;
(void)dir;
return 0;
}
int _open(char *path, int flags, ...)
{
(void)path;
(void)flags;
/* Pretend like we always fail */
return -1;
}
int _wait(int *status)
{
(void)status;
errno = ECHILD;
return -1;
}
int _unlink(char *name)
{
(void)name;
errno = ENOENT;
return -1;
}
int _times(struct tms *buf)
{
(void)buf;
return -1;
}
int _stat(char *file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _link(char *old, char *new)
{
(void)old;
(void)new;
errno = EMLINK;
return -1;
}
int _fork(void)
{
errno = EAGAIN;
return -1;
}
int _execve(char *name, char **argv, char **env)
{
(void)name;
(void)argv;
(void)env;
errno = ENOMEM;
return -1;
}
Core/Src/sysmem.c
+79
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@@ -0,0 +1,79 @@
/**
******************************************************************************
* @file sysmem.c
* @author Generated by STM32CubeIDE
* @brief STM32CubeIDE System Memory calls file
*
* For more information about which C functions
* need which of these lowlevel functions
* please consult the newlib libc manual
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <errno.h>
#include <stdint.h>
/**
* Pointer to the current high watermark of the heap usage
*/
static uint8_t *__sbrk_heap_end = NULL;
/**
* @brief _sbrk() allocates memory to the newlib heap and is used by malloc
* and others from the C library
*
* @verbatim
* ############################################################################
* # .data # .bss # newlib heap # MSP stack #
* # # # # Reserved by _Min_Stack_Size #
* ############################################################################
* ^-- RAM start ^-- _end _estack, RAM end --^
* @endverbatim
*
* This implementation starts allocating at the '_end' linker symbol
* The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
* The implementation considers '_estack' linker symbol to be RAM end
* NOTE: If the MSP stack, at any point during execution, grows larger than the
* reserved size, please increase the '_Min_Stack_Size'.
*
* @param incr Memory size
* @return Pointer to allocated memory
*/
void *_sbrk(ptrdiff_t incr)
{
extern uint8_t _end; /* Symbol defined in the linker script */
extern uint8_t _estack; /* Symbol defined in the linker script */
extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
const uint8_t *max_heap = (uint8_t *)stack_limit;
uint8_t *prev_heap_end;
/* Initialize heap end at first call */
if (NULL == __sbrk_heap_end)
{
__sbrk_heap_end = &_end;
}
/* Protect heap from growing into the reserved MSP stack */
if (__sbrk_heap_end + incr > max_heap)
{
errno = ENOMEM;
return (void *)-1;
}
prev_heap_end = __sbrk_heap_end;
__sbrk_heap_end += incr;
return (void *)prev_heap_end;
}
Core/Src/system_stm32f1xx.c
+406
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@@ -0,0 +1,406 @@
/**
******************************************************************************
* @file system_stm32f1xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
*
* 1. This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
* factors, AHB/APBx prescalers and Flash settings).
* This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32f1xx_xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* 2. After each device reset the HSI (8 MHz) is used as system clock source.
* Then SystemInit() function is called, in "startup_stm32f1xx_xx.s" file, to
* configure the system clock before to branch to main program.
*
* 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depending on
* the product used), refer to "HSE_VALUE".
* When HSE is used as system clock source, directly or through PLL, and you
* are using different crystal you have to adapt the HSE value to your own
* configuration.
*
******************************************************************************
* @attention
*
* Copyright (c) 2017-2021 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32f1xx_system
* @{
*/
/** @addtogroup STM32F1xx_System_Private_Includes
* @{
*/
#include "stm32f1xx.h"
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Defines
* @{
*/
#if !defined (HSE_VALUE)
#define HSE_VALUE 8000000U /*!< Default value of the External oscillator in Hz.
This value can be provided and adapted by the user application. */
#endif /* HSE_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE 8000000U /*!< Default value of the Internal oscillator in Hz.
This value can be provided and adapted by the user application. */
#endif /* HSI_VALUE */
/*!< Uncomment the following line if you need to use external SRAM */
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
/* #define DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/* Note: Following vector table addresses must be defined in line with linker
configuration. */
/*!< Uncomment the following line if you need to relocate the vector table
anywhere in Flash or Sram, else the vector table is kept at the automatic
remap of boot address selected */
/* #define USER_VECT_TAB_ADDRESS */
#if defined(USER_VECT_TAB_ADDRESS)
/*!< Uncomment the following line if you need to relocate your vector Table
in Sram else user remap will be done in Flash. */
/* #define VECT_TAB_SRAM */
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
#endif /* USER_VECT_TAB_ADDRESS */
/******************************************************************************/
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Variables
* @{
*/
/* This variable is updated in three ways:
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
uint32_t SystemCoreClock = 8000000;
const uint8_t AHBPrescTable[16U] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
const uint8_t APBPrescTable[8U] = {0, 0, 0, 0, 1, 2, 3, 4};
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_FunctionPrototypes
* @{
*/
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
#ifdef DATA_IN_ExtSRAM
static void SystemInit_ExtMemCtl(void);
#endif /* DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/**
* @}
*/
/** @addtogroup STM32F1xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system
* Initialize the Embedded Flash Interface, the PLL and update the
* SystemCoreClock variable.
* @note This function should be used only after reset.
* @param None
* @retval None
*/
void SystemInit (void)
{
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
#ifdef DATA_IN_ExtSRAM
SystemInit_ExtMemCtl();
#endif /* DATA_IN_ExtSRAM */
#endif
/* Configure the Vector Table location -------------------------------------*/
#if defined(USER_VECT_TAB_ADDRESS)
SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
#endif /* USER_VECT_TAB_ADDRESS */
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
* or HSI_VALUE(*) multiplied by the PLL factors.
*
* (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
* 8 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
* 8 MHz or 25 MHz, depending on the product used), user has to ensure
* that HSE_VALUE is same as the real frequency of the crystal used.
* Otherwise, this function may have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
* @param None
* @retval None
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0U, pllmull = 0U, pllsource = 0U;
#if defined(STM32F105xC) || defined(STM32F107xC)
uint32_t prediv1source = 0U, prediv1factor = 0U, prediv2factor = 0U, pll2mull = 0U;
#endif /* STM32F105xC */
#if defined(STM32F100xB) || defined(STM32F100xE)
uint32_t prediv1factor = 0U;
#endif /* STM32F100xB or STM32F100xE */
/* Get SYSCLK source -------------------------------------------------------*/
tmp = RCC->CFGR & RCC_CFGR_SWS;
switch (tmp)
{
case 0x00U: /* HSI used as system clock */
SystemCoreClock = HSI_VALUE;
break;
case 0x04U: /* HSE used as system clock */
SystemCoreClock = HSE_VALUE;
break;
case 0x08U: /* PLL used as system clock */
/* Get PLL clock source and multiplication factor ----------------------*/
pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
#if !defined(STM32F105xC) && !defined(STM32F107xC)
pllmull = ( pllmull >> 18U) + 2U;
if (pllsource == 0x00U)
{
/* HSI oscillator clock divided by 2 selected as PLL clock entry */
SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
}
else
{
#if defined(STM32F100xB) || defined(STM32F100xE)
prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
/* HSE oscillator clock selected as PREDIV1 clock entry */
SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
#else
/* HSE selected as PLL clock entry */
if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
{/* HSE oscillator clock divided by 2 */
SystemCoreClock = (HSE_VALUE >> 1U) * pllmull;
}
else
{
SystemCoreClock = HSE_VALUE * pllmull;
}
#endif
}
#else
pllmull = pllmull >> 18U;
if (pllmull != 0x0DU)
{
pllmull += 2U;
}
else
{ /* PLL multiplication factor = PLL input clock * 6.5 */
pllmull = 13U / 2U;
}
if (pllsource == 0x00U)
{
/* HSI oscillator clock divided by 2 selected as PLL clock entry */
SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
}
else
{/* PREDIV1 selected as PLL clock entry */
/* Get PREDIV1 clock source and division factor */
prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
if (prediv1source == 0U)
{
/* HSE oscillator clock selected as PREDIV1 clock entry */
SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
}
else
{/* PLL2 clock selected as PREDIV1 clock entry */
/* Get PREDIV2 division factor and PLL2 multiplication factor */
prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4U) + 1U;
pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8U) + 2U;
SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
}
}
#endif /* STM32F105xC */
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
/* Compute HCLK clock frequency ----------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4U)];
/* HCLK clock frequency */
SystemCoreClock >>= tmp;
}
#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
/**
* @brief Setup the external memory controller. Called in startup_stm32f1xx.s
* before jump to __main
* @param None
* @retval None
*/
#ifdef DATA_IN_ExtSRAM
/**
* @brief Setup the external memory controller.
* Called in startup_stm32f1xx_xx.s/.c before jump to main.
* This function configures the external SRAM mounted on STM3210E-EVAL
* board (STM32 High density devices). This SRAM will be used as program
* data memory (including heap and stack).
* @param None
* @retval None
*/
void SystemInit_ExtMemCtl(void)
{
__IO uint32_t tmpreg;
/*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
required, then adjust the Register Addresses */
/* Enable FSMC clock */
RCC->AHBENR = 0x00000114U;
/* Delay after an RCC peripheral clock enabling */
tmpreg = READ_BIT(RCC->AHBENR, RCC_AHBENR_FSMCEN);
/* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
RCC->APB2ENR = 0x000001E0U;
/* Delay after an RCC peripheral clock enabling */
tmpreg = READ_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPDEN);
(void)(tmpreg);
/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
/*---------------- SRAM Address lines configuration -------------------------*/
/*---------------- NOE and NWE configuration --------------------------------*/
/*---------------- NE3 configuration ----------------------------------------*/
/*---------------- NBL0, NBL1 configuration ---------------------------------*/
GPIOD->CRL = 0x44BB44BBU;
GPIOD->CRH = 0xBBBBBBBBU;
GPIOE->CRL = 0xB44444BBU;
GPIOE->CRH = 0xBBBBBBBBU;
GPIOF->CRL = 0x44BBBBBBU;
GPIOF->CRH = 0xBBBB4444U;
GPIOG->CRL = 0x44BBBBBBU;
GPIOG->CRH = 0x444B4B44U;
/*---------------- FSMC Configuration ---------------------------------------*/
/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
FSMC_Bank1->BTCR[4U] = 0x00001091U;
FSMC_Bank1->BTCR[5U] = 0x00110212U;
}
#endif /* DATA_IN_ExtSRAM */
#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/