GPIO模拟SPI通信从机代码

GPIO模拟SPI通信从机代码 主函数为： #include "sys.h" #include "delay.h" #include "usart.h" #include "led.h" #include "key.h" #include "spi.h" #include "lcd.h" #include "sdram.h" unsigned char data[9]="B15020106"; int main(void) { u8 receivr_Data=0,i=0; HAL_Init(); Stm32_Clock_Init(360,25,2,8); delay_init(180); uart_init(115200); LED_Init(); LCD_Init(); SDRAM_Init(); POINT_COLOR=BLUE; LCD_Clear(WHITE); SPI_Init(); LCD_ShowString(10,40, 96,24,24,"Rx data:"); LCD_ShowString(10,80,216,24,24,"Tx data:B15020106"); while(i<9) { receivr_Data=SlaveSPI_read(); if(receivr_Data!=0) { i++; LCD_ShowChar(106+12*(i-1),40,receivr_Data,24,0); } receivr_Data=0; } LED0=0; SPI_MISO_H; delay_ms(500); i=0; for(i=0;i<9;i++) { SPI_MISO_H; while(SPI_MOSI==0) SlaveSPI_write(data[i]); SlaveSPI_write(data[i]); SlaveSPI_write(data[i]); } while(1) { }