本帖最后由 wanyisq 于 2016-5-25 09:21 编辑
我把以前的工程中的模拟SPI换成cubemx生成的硬件SPI代码,驱动OLED。但是一直没效果。之前没用过CUBEMX,不知道问题在哪。
生成的SPI.c文件如下
#include "spi.h"
#include "gpio.h"
SPI_HandleTypeDef hspi1;
void MX_SPI1_Init(void)
{
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_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLED;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
hspi1.Init.CRCPolynomial = 10;
HAL_SPI_Init(&hspi1);
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(hspi->Instance==SPI1)
{
__SPI1_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
}
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
if(hspi->Instance==SPI1)
{
__SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA7 ------> SPI1_MOSI
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_7);
}
}
mian.c中的初始化如下
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_SPI1_Init();
while (1)
{
}
}
下面是SPI写函数。、
void SPI_WriteCmd(uint8_t cmd)
{
DC_L;
HAL_SPI_Transmit(&hspi1, (uint8_t *)cmd,1,100)
while(HAL_SPI_GetState(&hspi1)==HAL_SPI_STATE_BUSY_TX);
}
void SPI_Write_Data(uint8_t data)
{
DC_H;
HAL_SPI_Transmit(&hspi1, (uint8_t *)data,1,100)
while(HAL_SPI_GetState(&hspi1)==HAL_SPI_STATE_BUSY_TX);
}
那位大神看得出问题在哪里吗
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