static rt_size_t spi_write_595( rt_device_t dev,
rt_off_t pos,const void *buffer, rt_size_t size)
{
rt_uint32_t index, nr;
const uint8_t *write_buffer = buffer;
nr = size;
for (index = 0; index < nr; index++)
{
uint8_t send_buffer[4];
send_buffer[0] = 1;
send_buffer[1] = 2;
send_buffer[2] = 3;
send_buffer[3] = 0;
rt_spi_send_then_send(spi_m74hc595.rt_spi_device, send_buffer, 4, write_buffer, 256);
//write_buffer += 256;
//wait_busy();
}
return size;
}
void spi_user_sendbytes(uint8_t *address,const void *date,uint16_t length)
{
rt_spi_send_then_send(spi_user,address,1,date,length);
}
