如何将STM32F4与智能卡ISO7816连接起来？

大家好你们好。我的任务是将 STM32F4 发现板与智能卡 ISO7816 连接起来。我不使用接口 ST8024CDR 仅通过图像中指定的方案直接挂钩支付：
我尝试将 Cubex 项目改编为 STM32F1xx-EVAL。ATR 接收不工作。示波器显示地图上的 I/O 端口类似于锯齿信号，但更平坦（在三个不同的地图上是不同的）。所以我想它仍然是 ATR。

UART和频率的配置：

• void SystemClock_Config(void)
• {
•   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
•   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
•   /** Configure the main internal regulator output voltage
•   */
•   __HAL_RCC_PWR_CLK_ENABLE();
•   __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
•   /** 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_ON;
•   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
•   RCC_OscInitStruct.PLL.PLLM = 8;
•   RCC_OscInitStruct.PLL.PLLN = 168;
•   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
•   RCC_OscInitStruct.PLL.PLLQ = 4;
•   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_PLLCLK;
•   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
•   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
•   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
•   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
•   {
•     Error_Handler();
•   }
• }
  

• static void MX_USART1_SMARTCARD_Init(void){
•   /* USER CODE BEGIN USART1_Init 0 */
•         __HAL_RCC_USART1_CLK_ENABLE();
•   /* USER CODE END USART1_Init 0 */
•   /* USER CODE BEGIN USART1_Init 1 */
•         /* USART Clock set to 3,5 MHz (PCLK2 (84 MHz) / 24) */
•   /* USER CODE END USART1_Init 1 */
•   SmartCardHandle.Instance = USART1;
•   SmartCardHandle.Init.BaudRate = 9408;         /* Starting baudrate = 3,5MHz / 372etu */
•   SmartCardHandle.Init.WordLength = SMARTCARD_WORDLENGTH_9B;
•   SmartCardHandle.Init.StopBits = SMARTCARD_STOPBITS_1_5;
•   SmartCardHandle.Init.Parity = SMARTCARD_PARITY_EVEN;
•   SmartCardHandle.Init.Mode = SMARTCARD_MODE_TX_RX;
•   SmartCardHandle.Init.CLKPolarity = SMARTCARD_POLARITY_LOW;
•   SmartCardHandle.Init.CLKPhase = SMARTCARD_PHASE_1EDGE;
•   SmartCardHandle.Init.CLKLastBit = SMARTCARD_LASTBIT_DISABLE;
•   SmartCardHandle.Init.Prescaler = 12;
•   SmartCardHandle.Init.GuardTime = 16;
•   SmartCardHandle.Init.NACKState = SMARTCARD_NACK_DISABLE;
•   if (HAL_SMARTCARD_Init(&SmartCardHandle) != HAL_OK)
•   {
•     Error_Handler();
•   }
•         __HAL_SMARTCARD_ENABLE(&SmartCardHandle);
•   /* USER CODE BEGIN USART1_Init 2 */
•         HAL_SMARTCARD_Init(&SmartCardHandle);
•         SC_RESET(GPIO_PIN_SET);
•   /* USER CODE END USART1_Init 2 */
• }
  

• void HAL_SMARTCARD_MspInit(SMARTCARD_HandleTypeDef* hsmartcard)
• {
•   GPIO_InitTypeDef GPIO_InitStruct = {0};
•   if(hsmartcard->Instance==USART1)
•   {
•   /* USER CODE BEGIN USART1_MspInit 0 */
•   /* USER CODE END USART1_MspInit 0 */
•     /* Peripheral clock enable */
•     __HAL_RCC_USART1_CLK_ENABLE();
•     __HAL_RCC_GPIOA_CLK_ENABLE();
•     /**USART1 GPIO Configuration
•     PA8     ------> USART1_CK
•     PA9     ------> USART1_TX
•     */
•     GPIO_InitStruct.Pin = GPIO_PIN_8;
•     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
•     GPIO_InitStruct.Pull = GPIO_PULLUP;
•     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
•     GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
•     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
•     GPIO_InitStruct.Pin = GPIO_PIN_9;
•     GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
•     GPIO_InitStruct.Pull = GPIO_PULLUP;
•     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
•     GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
•     HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
•     /* USART1 interrupt Init */
•     HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
•     HAL_NVIC_EnableIRQ(USART1_IRQn);
•   /* USER CODE BEGIN USART1_MspInit 1 */
•   /* USER CODE END USART1_MspInit 1 */
•   }
• }
  

尝试直接阅读：

• HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_RESET);
• HAL_Delay(500);
• HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_SET);
• convention=HAL_SMARTCARD_Receive(&SmartCardHandle, atr_buff, atr_size, 500);
• HAL_Delay(12);
• /* Insert delay of 20ms for signal stabilization */
• HAL_GPIO_WritePin(GPIOD, GPIO_PIN_15, GPIO_PIN_SET);
• HAL_Delay(300);
  

PD15 - 重置。
我总是得到零。可能是什么问题呢？