STM32F207ZET6を使用して PCB を作成しました。これには、 I2C 経由で接続されたNXP NFCチップがあります。私が抱えている問題は、NFC チップと通信できないことです。
ARM チップと NFC 間の I2C 接続を確認しました。両方のチップが正しい電力を得ていることを確認しました。
stlink-v3 で stm32cube IDE を使用しています。I2C1 ピンを構成し、次のコードを記述しました。
私が試したこと
HAL_I2C_IsDeviceReady()NFCが接続されているかどうかを確認するために使用しようとしました。これは true を返しますが、そこに入力したすべてのアドレスでも true を返します。- コマンドを送信しようとしましたが、それらをバッファ配列に読み戻そうとしました。返されたものはすべて 0 でした。
cmds[1] = 0x60;
cmds[2] = 0x00;
HAL_I2C_Master_Transmit(&hi2c1, nfc_Adr_w, cmds, 2, HAL_MAX_DELAY);
HAL_Delay(15);
HAL_I2C_Master_Transmit(&hi2c1, nfc_Adr_w, cmds, 1, HAL_MAX_DELAY);
HAL_I2C_Master_Receive(&hi2c1, nfc_Adr_r, buffer, 1, HAL_MAX_DELAY);
どんな助けでも大歓迎です、ありがとう。
完全なコード
#include "main.h"
/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
unsigned char buffer[150];
unsigned char cmds[3];
_Bool results = 0;
uint8_t devices = 0u;
int deviceReady = 0u;
/* Private user code ---------------------------------------------------------*/
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
uint8_t nfc_Adr_w = 0b10101010;
uint8_t nfc_Adr_r = 0b10101011;
/* 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();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
//HAL_I2C_Master_Transmit();
//HAL_I2C_Master_Receive();
cmds[0] = 0x00;
cmds[1] = 0x60;
cmds[2] = 0x00;
HAL_I2C_Master_Transmit(&hi2c1, nfc_Adr_w, cmds, 2, HAL_MAX_DELAY);
HAL_Delay(15);
HAL_I2C_Master_Transmit(&hi2c1, nfc_Adr_w, cmds, 1, HAL_MAX_DELAY);
HAL_I2C_Master_Receive(&hi2c1, nfc_Adr_r, buffer, 1, HAL_MAX_DELAY);
// deviceReady = HAL_I2C_IsDeviceReady(&hi2c1, 0x3C, 3u, 10u);
// printf("Searching for I2C devices on the bus...\n");
/* Values outside 0x03 and 0x77 are invalid. */
// for (uint8_t i = 0x03u; i < 0x78u; i++)
// {
// uint8_t address = i << 1u;
// /* In case there is a positive feedback, print it out. */
// if (HAL_OK == HAL_I2C_IsDeviceReady(&hi2c1, address, 3u, 10u))
// {
//// printf("Device found: 0x%02X\n", address);
// devices++;
// results = 1;
// }
// if (HAL_TIMEOUT == HAL_I2C_IsDeviceReady(&hi2c1, address, 3u, 10u)) {
// devices++;
// }
// deviceReady = HAL_I2C_IsDeviceReady(&hi2c1, address, 3u, 10u);
// }
// /* Feedback of the total number of devices. */
//// if (0u == devices)
//// {
////// printf("No device found.\n");
//// }
//// else
//// {
//// printf("Total found devices: %d\n", devices);
//// }
HAL_Delay(1000u);
devices = 0u;
/* 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 CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != 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 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_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
/*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);
}
/* 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 */
/* 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,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/