modu8888 发表于 2016-8-9 09:22:19

STM32F051的SPI2有什么特殊性，为何不灵？

      我用103的SPI1、SPI2，051的SPI1驱动12864都可以。但同样配置051的SPI2来驱动12864，却不能。无论我自己打的板子，还是网购的最小系统，均是如此。

       又碰到类似问题的朋友吗？

zhangxu56726 发表于 2016-8-9 10:20:40

你的程序有问题

安 发表于 2016-8-9 10:32:58

查问题的几个方面：
1、配置、IO配置、SPI配置、时钟配置
2、波形监听

modu8888 发表于 2016-8-9 10:45:03

回楼上几位，我再看看！

modu8888 发表于 2016-8-9 10:46:27

贴程序 让大家帮我捉虫下：

/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi2;

TIM_HandleTypeDef htim2;

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t second=0;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
static void MX_GPIO_Init(void);
static void MX_TIM2_Init(void);
static void MX_SPI2_Init(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
void LCD_wr(uint8_t lcd_com,uint8_t lcd_dat);
void initlcd(void);
void lcddisp(uint8_t *chn);
void display(uint8_t add, unsigned char *chn);


/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

int main(void)
{

/* USER CODE BEGIN 1 */
        uint8_t str1={0x30,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0};
        uint8_t str2={0xB7,0xf0,0xB5,0xB0,0xB9,0xB0,0xB9,0xCF,0};
/* USER CODE END 1 */

/* MCU Configuration----------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* Configure the system clock */
SystemClock_Config();

/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_TIM2_Init();
MX_SPI2_Init();

/* USER CODE BEGIN 2 */
        HAL_TIM_Base_Start_IT(&htim2);
        HAL_Delay(40);
        initlcd();

        display(0x80,str1);
        display(0x90,str2);
       
/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
                if(second==1)
                {
                second=0;
                initlcd();
                str1++;
                if(str1>0x39)str1=0x30;
                display(0x80,str1);
                display(0x90,str2);
                }       
}
/* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL3;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
    Error_Handler();
}

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
    Error_Handler();
}

HAL_RCC_EnableCSS();

HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

/* SPI2 init function */
static void MX_SPI2_Init(void)
{

hspi2.Instance = SPI2;
hspi2.Init.Mode = SPI_MODE_MASTER;
hspi2.Init.Direction = SPI_DIRECTION_2LINES;
hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi2.Init.NSS = SPI_NSS_SOFT;
hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi2.Init.CRCPolynomial = 7;
hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi2.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
if (HAL_SPI_Init(&hspi2) != HAL_OK)
{
    Error_Handler();
}

}

/* TIM2 init function */
static void MX_TIM2_Init(void)
{

TIM_ClockConfigTypeDef sClockSourceConfig;
TIM_MasterConfigTypeDef sMasterConfig;

htim2.Instance = TIM2;
htim2.Init.Prescaler = 2400;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 10000;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
{
    Error_Handler();
}

sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
{
    Error_Handler();
}

sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
{
    Error_Handler();
}

}

/** Configure pins as
      * Analog
      * Input
      * Output
      * EVENT_OUT
      * EXTI
*/
static void MX_GPIO_Init(void)
{

GPIO_InitTypeDef GPIO_InitStruct;

/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);

/*Configure GPIO pin : PB0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
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);

}

/* USER CODE BEGIN 4 */
void LCD_wr(uint8_t lcd_com,uint8_t lcd_data)                                       
{
      uint8_t lcd_data_msb,lcd_data_lsb;
                                uint8_t i;
       
      lcd_data_msb=0xf0&lcd_data;
      lcd_data_lsb=(0x0f&lcd_data)<<4;
      if(lcd_com==0)                  
                                {
                                i=0xf8;
                                i=lcd_data_msb;
                                i=lcd_data_lsb;
                                }

                                if(lcd_com==1)                                       
      {
      i=0xfa;
                                i=lcd_data_msb;
                                i=lcd_data_lsb;
                                }

                                HAL_SPI_Transmit(&hspi2,i,3,100);
}      

void initlcd(void)                        
{
        LCD_wr(0,0x30);
        HAL_Delay(1);
        LCD_wr(0,0x01);
        HAL_Delay(2);
        LCD_wr(0,0x06);
        HAL_Delay(1);
        LCD_wr(0,0x0c);
        HAL_Delay(1);
}



void display(unsigned char x_add,unsigned char *ptr)
{
        while(*ptr != '\0')
        {
                LCD_wr(1,*ptr);
                ++ptr;
        }
}


void HAL_Delay(__IO uint32_t Delay)
{
uint32_t tickstart = 0;
tickstart = HAL_GetTick();
while((HAL_GetTick() - tickstart) < Delay)
{
}
}

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
                if(htim->Instance==htim2.Instance)
                {
                                second=1;
                }
}

/* USER CODE END 4 */

/**
* @briefThis function is executed in case of error occurrence.
* @paramNone
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
/* USER CODE END Error_Handler */
}

#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

/**
* @}
*/

/**
* @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

modu8888 发表于 2016-8-10 12:12:39

再用F030C8T6,两个SPI都可以。
页: [1]
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