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a43188408e537ff0f97f900914a2c0c9afcedb64
memdump-fw/Core/Src/main.c
Derisis13 a43188408e feature: working receive and state control 
feature: echo received data
fix: too many...
todo: i2c_dump can't dump anything
2022-12-13 13:13:15 +01:00

533 lines
16 KiB
C
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2022 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usb_device.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 ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
SPI_HandleTypeDef hspi1;
/* USER CODE BEGIN PV */
state st = run;
uint8_t cmd_buf [BUFSIZ] = {0};
uint8_t cmd_pos = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_SPI1_Init(void);
/* USER CODE BEGIN PFP */
extern uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* -----------------------------------------------------------------------------
* Converts a hexadecimal ASCII character to it's value
*
* From https://github.com/Sasszem/oldschool-game/blob/main/save.c
* under the conditions of the MIT License:
*
* MIT License
*
* Copyright (c) 2022 László Baráth
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* -------------------------------------------------------------------------- */
uint8_t hex_nibble(const char val) {
if ('0' <= val && val <= '9')
return val - '0';
if ('a' <= val && val <= 'f')
return val - 'a' + 10;
if ('A' <= val && val <= 'F')
return val - 'A' + 10;
return 0xFF;
}
/* -----------------------------------------------------------------------------------------
* Converts all characters until the first character that matches delim or until *Len
* Result is stored to dest
* Return value is the number of characters processed or 0 in case of a conversion failure
* ----------------------------------------------------------------------------------------- */
uint8_t homegrown_scanf (uint8_t *Buf, uint8_t Len, uint32_t *dest, const char delim) {
uint8_t cursor = 0;
for (*dest = 0; Buf[cursor] != delim && cursor < Len; cursor++) {
uint8_t nibble = hex_nibble(Buf[cursor]);
if (nibble == 0xFF) {
*dest = 0;
return(cursor + 1);
}
*dest = *dest * 16 + nibble;
}
return (cursor + 1);
}
/* --------------------------------------------------------------------------
* convert a hex to ascii string
* input is a byte array (binary), output is a character array (str)
* len is the number of bytes to convert, str needs to be at least 2x as big
* -------------------------------------------------------------------------- */
void hex_to_ascii (const uint8_t *binary, char *str, uint16_t len) {
for (uint16_t i = 0; i < len; ++i) {
uint8_t low = binary [i] & 0x0f;
uint8_t high = binary [i] >> 4;
str [2 * i] = (low <= 0x9) ? low + '0' : low - 0xA + 'A';
str [2 * i + 1] = (high <= 0x9) ? high + '0' : high - 0xA + 'A';
}
}
void i2c_dump(uint16_t dev_address, uint16_t capacity) {
char tx_buff [BUFSIZ] = {0};
uint8_t read_buff [BUFSIZ / 2] = {0};
for (uint16_t i = 0; i < capacity; i += BUFSIZ / 2) {
if (HAL_I2C_Mem_Read(&hi2c1, dev_address << 1, i, capacity, read_buff, capacity, capacity / 50000) != HAL_OK) {
CDC_Transmit_FS((uint8_t *) "No memory on address\n\r", 22);
__HAL_RCC_I2C1_FORCE_RESET();
HAL_Delay(100);
__HAL_RCC_I2C1_RELEASE_RESET();
}
else {
hex_to_ascii(read_buff, tx_buff, capacity);
CDC_Transmit_FS((uint8_t *) tx_buff, capacity * 2);
CDC_Transmit_FS((uint8_t *) "\n\r", 2);
}
}
}
// todo spi, d28, d32 read & write, i2c write
/* 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_I2C1_Init();
MX_SPI1_Init();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
char error_msg[] = "Invalid command!\n\r";
uint32_t i2c_address = 0;
uint32_t limit_address = 0;
__HAL_RCC_I2C1_FORCE_RESET();
HAL_Delay(100);
__HAL_RCC_I2C1_RELEASE_RESET();
HAL_GPIO_WritePin(ARST_GPIO_Port, ARST_Pin, 0);
HAL_Delay(100);
HAL_GPIO_WritePin(ARST_GPIO_Port, ARST_Pin, 1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1) {
HAL_Delay(100);
//if received \r start decoding state
if (cmd_buf[cmd_pos - 1] == '\r') {
// receive the command, set state
if (cmd_buf[0] == 'r') {
switch (cmd_buf[1]) {
case 'i':
st = read_i2c;
break;
case 's':
st = read_spi;
break;
case '2':
st = read_d28;
break;
case '3':
st = read_d32;
break;
default:
st = invalid;
}
}
else if (cmd_buf[0] == 'w') {
switch (cmd_buf[1]) {
case 'i':
st = write_i2c;
break;
case 's':
st = write_spi;
break;
case '2':
st = write_d28;
break;
case '3':
st = write_d32;
break;
default:
st = invalid;
}
}
else {
st = invalid;
}
// receive optional i2c address and limit address
uint8_t cursor = 3; // 3 = 2 for the command, 1 for a separator
cmd_pos -= cursor - 1;
if (st == write_i2c || st == read_i2c) {
cursor += (homegrown_scanf(cmd_buf + cursor, cmd_pos, &i2c_address, ' '));
if (i2c_address == 0) {
st = invalid;
}
cmd_pos -= cursor - 1;
}
homegrown_scanf(cmd_buf + cursor, cmd_pos, &limit_address, '\r');
if (limit_address == 0) {
st = invalid;
}
//reset cmd_buf and cmd_pos
memset(cmd_buf, 0, BUFSIZ);
cmd_pos = 0;
}
switch (st) {
case read_i2c:
i2c_dump(i2c_address, limit_address);
i2c_address = 0;
limit_address = 0;
st = run;
break;
case read_spi:
limit_address = 0;
st = run;
break;
case read_d28:
limit_address = 0;
st = run;
break;
case read_d32:
limit_address = 0;
st = run;
break;
case write_i2c:
limit_address = 0;
st = run;
break;
case write_spi:
limit_address = 0;
st = run;
break;
case write_d28:
limit_address = 0;
st = run;
break;
case write_d32:
limit_address = 0;
st = run;
break;
case invalid:
CDC_Transmit_FS( (uint8_t *) error_msg, strlen(error_msg));
st = run;
default:
continue;
}
/* 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};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV2;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
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_1) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief I2C1 Initialization Function
* @param None
* @retval None
*/
static void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
/**
* @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 GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* 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(ACLK_GPIO_Port, ACLK_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, D0_Pin|D1_Pin|D2_Pin|D3_Pin
|D4_Pin|D5_Pin|D6_Pin|D7_Pin
|SZE_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : ARST_Pin ADATA_Pin */
GPIO_InitStruct.Pin = ARST_Pin|ADATA_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pin : ACLK_Pin */
GPIO_InitStruct.Pin = ACLK_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(ACLK_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : LED_Pin */
GPIO_InitStruct.Pin = LED_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : D0_Pin D1_Pin D2_Pin D3_Pin
D4_Pin D5_Pin D6_Pin D7_Pin
SZE_Pin */
GPIO_InitStruct.Pin = D0_Pin|D1_Pin|D2_Pin|D3_Pin
|D4_Pin|D5_Pin|D6_Pin|D7_Pin
|SZE_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 pins : WP_Pin NCE_Pin NWE_Pin */
GPIO_InitStruct.Pin = WP_Pin|NCE_Pin|NWE_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* 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 */
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