#include "mx_spi.h"
#include "bsp_spi.h"
#include "string.h"
mx_spi_frame_struct mx_spi_frame = {0};


static uint16_t CalChecksum(uint8_t * data, uint16_t len)
{
    uint16_t sum = 0;
    for(int i = 0; i < len; ++i)
    {
        sum += data[i];
    }
    return sum;
}

uint8_t creat_mx_spi_frame(uint8_t device_id, uint8_t message_type, uint8_t error_flag, uint8_t *data, uint16_t data_len, mx_spi_frame_struct * mx_spi_out_frame)
{
		if(data_len != sizeof(mx_spi_out_frame->data))
		{
			return 0;
		}
		else
		{
			mx_spi_out_frame->device_id = device_id;
			mx_spi_out_frame->message_type = message_type;
			mx_spi_out_frame->error_flag = error_flag;
			memcpy(mx_spi_out_frame->data,data,data_len);
			mx_spi_out_frame->check_sum = CalChecksum((uint8_t *)mx_spi_out_frame,sizeof(mx_spi_frame_struct)-1);
			
			return 1;	
		}
}

void mx_spi_init(void)
{
	spi1_init((uint8_t *)&mx_spi_frame, sizeof(mx_spi_frame));
	
}

void update_spi_data(uint8_t *sensor_data,uint16_t sensor_data_len)
{
	static mx_spi_frame_struct mx_spi_frame_temp = {0};
	
		creat_mx_spi_frame(0x01,0x01,0x00,sensor_data,sensor_data_len,&mx_spi_frame_temp);
		if(spi_i2s_flag_get(SPI1,SPI_I2S_BF_FLAG) == RESET)
		{
			if(SPI_SLAVE_CS_READ() == SET)
			{
					
					memcpy((uint8_t *)&mx_spi_frame,(uint8_t *)&mx_spi_frame_temp,sizeof(mx_spi_frame_struct));
				
				
			}
		}
		
		
}

//ˢбêÖ¾
void updata_spi_dma(void)
{
	static uint8_t busy = 0;
	
	if(spi_i2s_flag_get(SPI1,SPI_I2S_BF_FLAG) == RESET && SPI_SLAVE_CS_READ() == SET)
		{
			if(busy)
			{
					//mx_spi_init();
					busy = 0;
					dma_channel_enable(DMA2_CHANNEL1, FALSE);
					spi_enable(SPI1, FALSE);
					spi_enable(SPI1, TRUE);
					dma_data_number_set(DMA2_CHANNEL1, sizeof(mx_spi_frame));
					dma_channel_enable(DMA2_CHANNEL1, TRUE);
			}
		}
	
	if(spi_i2s_flag_get(SPI1,SPI_I2S_BF_FLAG) == SET && SPI_SLAVE_CS_READ() == RESET)
	{
			busy = 1;
	}
}