STM32 OV2640 ESP8266图像传输

STM32 OV2640 ESP8266图像传输 int main() { u16 temp; u8 *p; u32 i,k; u32 count,spi_send_len; delay_init(168); uart_init(115200); printf("usart init.\r\n"); OV2640_Init(); DCMI_Config(); user_SPI_Config(); SPI1_SetSpeed(21); printf("ov2640 init\r\n"); OV2640_JPEG_Mode(); OV2640_OutSize_Set(1600,1200); DCMI_DMA_Init((u32)&frame;_data,JPEG_BUFF_LEN,DMA_MemoryDataSize_Word,DMA_MemoryInc_Enable); DMA_Cmd(DMA2_Stream1,ENABLE); DCMI_CaptureCmd(ENABLE); printf("init success.\r\n"); delay_ms(1000); GPIO_SetBits(GPIOB,GPIO_Pin_12); while(1) { if(jpeg_ok==1) { printf("send...\r\n"); count=0; wr_rdy=1; p = (u8*)frame_data; spi_send_len = jpeg_len/8; //byte-->word spi_send_len+=1; FRAME_START();//开始传输信号 for(k=0;kDR = (u8)p[count]; count++; } k++; SPI_NSS_DISABLE(); } else //*可以添加传输失败的超时处理 { } } delay_ms(1); //这里必须有延时，否则ESP8266 GPIO中断比SPI中断先到，导致接收不到最后几个字节 FRAME_END(); printf("count:%d.\r\n",count); count= 0; delay_ms(2); //稍作延时，更加稳定的传输 jpeg_ok = 2; } } }