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fix driver issues, add simple display testing code

This commit is contained in:
ІО-23 Шмуляр Олег 2025-02-14 23:03:36 +02:00
parent b51883ca7d
commit e696d2f52f
4 changed files with 158 additions and 168 deletions
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1
Core/Inc/stm32f4xx_it.h
View File

@ -55,6 +55,7 @@ void SVC_Handler(void);
void DebugMon_Handler(void);
void PendSV_Handler(void);
void SysTick_Handler(void);
void EXTI0_IRQHandler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */

274
Core/Src/main.c
View File

@ -36,55 +36,13 @@
#define DISPLAY_RW ((uint16_t) (0x1U << 10))
#define DISPLAY_ENA ((uint16_t) (0x1U << 11))
#define UPDATE_STATUS GPIOD->ODR = ((GPIOE->ODR & DISPLAY_ENA) << 1) | ((GPIOE->ODR & DISPLAY_RS) << 6)
#define DISPLAY_CHAR_DELAY 1 // character
#define DISPLAY_COMM_DELAY 60 // command
#define DISPLAY_INSTRUCT_BYTE(byte) \
#define PANIC(status) \
do { \
GPIOE->ODR = ((((uint16_t)(byte)) << 8) & 0xF000); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
GPIOE->BSRR = DISPLAY_ENA; \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
GPIOE->BSRR = (DISPLAY_ENA << 16); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
\
GPIOE->ODR = ((((uint16_t)(byte)) << 12) & 0xF000); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
GPIOE->BSRR = DISPLAY_ENA; \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
GPIOE->BSRR = (DISPLAY_ENA << 16); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_COMM_DELAY); \
GPIOD->ODR = status; \
while (1) {} \
} while (0)
#define DISPLAY_DATA_BYTE(byte) \
do { \
GPIOE->ODR = (((((uint16_t)(byte)) << 8) & 0xF000) | DISPLAY_RS); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
GPIOE->BSRR = DISPLAY_ENA; \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
GPIOE->BSRR = (DISPLAY_ENA << 16); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
\
GPIOE->ODR = (((((uint16_t)(byte)) << 12) & 0xF000) | DISPLAY_RS); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
GPIOE->BSRR = DISPLAY_ENA; \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
GPIOE->BSRR = (DISPLAY_ENA << 16); \
UPDATE_STATUS; \
HAL_Delay(DISPLAY_CHAR_DELAY); \
} while (0)
#define POLL_UNTIL_READY do { while (read_status() & 0x80) {} } while (0)
/* USER CODE END PD */
@ -97,6 +55,8 @@
/* USER CODE BEGIN PV */
int change = 1;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
@ -109,6 +69,70 @@ static void MX_GPIO_Init(void);
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t read_status(void)
{
// make sure GPIOE is in correct mode
GPIOE->MODER = 0x00504000;
if (GPIOE->MODER != 0x00504000)
PANIC(0x4000);
uint8_t status = 0;
GPIOE->ODR = 0x0;
GPIOE->BSRR = DISPLAY_RW;
GPIOE->BSRR = DISPLAY_ENA;
status |= (GPIOE->IDR & 0xF000) >> 8;
GPIOE->BSRR = (DISPLAY_ENA << 16);
GPIOE->BSRR = DISPLAY_ENA;
status |= (GPIOE->IDR & 0xF000) >> 12;
GPIOE->BSRR = (DISPLAY_ENA << 16);
GPIOE->ODR = 0x0;
return status;
}
void write_instruction_byte(uint8_t code)
{
// make sure GPIOE is in correct mode
GPIOE->MODER = 0x55504000;
if (GPIOE->MODER != 0x55504000)
PANIC(0x4000);
GPIOE->ODR = (code & 0xF0) << 8;
GPIOE->BSRR = DISPLAY_ENA;
GPIOE->BSRR = (DISPLAY_ENA << 16);
GPIOE->ODR = (code & 0x0F) << 12;
GPIOE->BSRR = DISPLAY_ENA;
GPIOE->BSRR = (DISPLAY_ENA << 16);
POLL_UNTIL_READY;
}
void write_data_byte(uint8_t code)
{
// make sure GPIOE is in correct mode
GPIOE->MODER = 0x55504000;
if (GPIOE->MODER != 0x55504000)
PANIC(0x4000);
GPIOE->ODR = ((code & 0xF0) << 8) | (DISPLAY_RS);
GPIOE->BSRR = DISPLAY_ENA;
GPIOE->BSRR = DISPLAY_ENA << 16;
GPIOE->ODR = ((code & 0x0F) << 12) | (DISPLAY_RS);
GPIOE->BSRR = DISPLAY_ENA;
GPIOE->BSRR = DISPLAY_ENA << 16;
POLL_UNTIL_READY;
}
/* USER CODE END 0 */
/**
@ -141,128 +165,44 @@ int main(void)
/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
DISPLAY_INSTRUCT_BYTE(0x01);
GPIOD->ODR = 0xF000;
HAL_Delay(1000);
//HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_SET);
uint8_t display_status = 0x0;
int attempts_left;
while (1) {
GPIOE->MODER &= 0x00FFFFFFU;
attempts_left = 10;
do {
if (GPIOE->MODER & 0xFF000000U) {
// port didn't switch mode
GPIOD->ODR = 0x4000U;
while (1) {}
} else {
GPIOD->ODR = 0x0U;
}
GPIOE->BSRR = DISPLAY_RW | (DISPLAY_RS << 16);
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(20);
display_status = (GPIOE->IDR & 0xF000) >> 8;
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(20);
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(20);
display_status |= (GPIOE->IDR & 0xF000) >> 12;
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(20);
GPIOD->ODR = ((display_status & 0xF0) << 8);
HAL_Delay(50);
} while (((display_status & 0x80) || ((display_status & 0x7F) != 0)) && attempts_left--);
if (!((display_status & 0x80) || ((display_status & 0x7F) != 0)))
break;
GPIOD->ODR = 0x0U;
GPIOE->ODR = 0x0U;
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(20);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(20);
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(20);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(20);
GPIOE->MODER |= 0x55000000U;
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(20);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(20);
DISPLAY_INSTRUCT_BYTE(0x01);
HAL_Delay(500);
}
GPIOD->ODR = 0x0U;
GPIOE->ODR = 0x0U;
/*
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(1);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(1);
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(1);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(1);
*/
GPIOE->MODER |= 0x55000000U;
// init display
/*
GPIOE->BSRR = DISPLAY_ENA;
HAL_Delay(1);
GPIOE->BSRR = (DISPLAY_ENA << 16);
HAL_Delay(1);
*/
// reset (supposedly)
DISPLAY_INSTRUCT_BYTE(0x01);
// switch to 4-bit 2-line mode
DISPLAY_INSTRUCT_BYTE(0x28);
write_instruction_byte(0x28);
// write characters
// reset display
write_instruction_byte(0x01);
// enable display
write_instruction_byte(0x0C);
// move cursor to first line
write_instruction_byte(0x80);
// write string
char a[] = "Well, hi there!";
for (int i = 0; i < sizeof(a)-1; i++) {
DISPLAY_DATA_BYTE(a[i]);
write_data_byte(a[i]);
}
// next line
DISPLAY_INSTRUCT_BYTE(0xC0);
/*
// move cursor to second line
write_instruction_byte(0xC0);
while (read_status() & 0x80) {}
// write more characters
// write another string
char b[] = "I'm doing it!";
for (int i = 0; i < sizeof(b)-1; i++) {
DISPLAY_DATA_BYTE(b[i]);
write_data_byte(b[i]);
while (read_status() & 0x80) {}
}
*/
GPIOE->ODR = 0x0U;
UPDATE_STATUS;
GPIOD->ODR = 0x0000;
unsigned int counter = 0;
write_instruction_byte(0x04); // set address decrement after write
/* USER CODE END 2 */
@ -270,6 +210,21 @@ int main(void)
/* USER CODE BEGIN WHILE */
while (1)
{
counter += change;
counter &= 0xFFFF;
unsigned int c = counter;
write_instruction_byte(0xC4);
for (int i = 0; i < 5; i++) {
int current_digit = c % 10;
c /= 10;
write_data_byte('0' + (char) current_digit);
}
HAL_Delay(70);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
@ -330,6 +285,7 @@ static void MX_GPIO_Init(void)
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
@ -340,6 +296,12 @@ static void MX_GPIO_Init(void)
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOD, GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15, GPIO_PIN_RESET);
/*Configure GPIO pin : PA0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : PE7 PE10 PE11 PE12
PE13 PE14 PE15 */
GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12
@ -356,6 +318,10 @@ static void MX_GPIO_Init(void)
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
/* EXTI interrupt init*/
HAL_NVIC_SetPriority(EXTI0_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI0_IRQn);
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

19
Core/Src/stm32f4xx_it.c
View File

@ -41,7 +41,7 @@
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
extern int change;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
@ -198,6 +198,23 @@ void SysTick_Handler(void)
/* please refer to the startup file (startup_stm32f4xx.s). */
/******************************************************************************/
/**
* @brief This function handles EXTI line0 interrupt.
*/
void EXTI0_IRQHandler(void)
{
/* USER CODE BEGIN EXTI0_IRQn 0 */
change *= -1;
for (int i = 0; i < 200000; i++) {asm("nop");}
/* USER CODE END EXTI0_IRQn 0 */
HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);
/* USER CODE BEGIN EXTI0_IRQn 1 */
/* USER CODE END EXTI0_IRQn 1 */
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

30
test1.ioc
View File

@ -12,18 +12,19 @@ Mcu.IP1=RCC
Mcu.IPNb=2
Mcu.Name=STM32F407V(E-G)Tx
Mcu.Package=LQFP100
Mcu.Pin0=PE7
Mcu.Pin1=PE10
Mcu.Pin10=PD15
Mcu.Pin2=PE11
Mcu.Pin3=PE12
Mcu.Pin4=PE13
Mcu.Pin5=PE14
Mcu.Pin6=PE15
Mcu.Pin7=PD12
Mcu.Pin8=PD13
Mcu.Pin9=PD14
Mcu.PinsNb=11
Mcu.Pin0=PA0-WKUP
Mcu.Pin1=PE7
Mcu.Pin10=PD14
Mcu.Pin11=PD15
Mcu.Pin2=PE10
Mcu.Pin3=PE11
Mcu.Pin4=PE12
Mcu.Pin5=PE13
Mcu.Pin6=PE14
Mcu.Pin7=PE15
Mcu.Pin8=PD12
Mcu.Pin9=PD13
Mcu.PinsNb=12
Mcu.ThirdPartyNb=0
Mcu.UserConstants=
Mcu.UserName=STM32F407VGTx
@ -31,6 +32,7 @@ MxCube.Version=6.12.1
MxDb.Version=DB.6.0.121
NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
NVIC.EXTI0_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
NVIC.ForceEnableDMAVector=true
NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
@ -40,6 +42,8 @@ NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
PA0-WKUP.Locked=true
PA0-WKUP.Signal=GPXTI0
PD12.Locked=true
PD12.Signal=GPIO_Output
PD13.Locked=true
@ -120,5 +124,7 @@ RCC.VCOI2SOutputFreq_Value=192000000
RCC.VCOInputFreq_Value=1000000
RCC.VCOOutputFreq_Value=192000000
RCC.VcooutputI2S=96000000
SH.GPXTI0.0=GPIO_EXTI0
SH.GPXTI0.ConfNb=1
board=custom
isbadioc=false