/* Â˲¨ */
static int ads_filter(int* buf)
{
int i, j, k, min;
int temp;
int tempXY[2][SAMP_CNT];
for(i=0; i<SAMP_CNT; i++)
{
ads7843_readX(&buf[0]);
ads7843_readY(&buf[1]);
tempXY[0][i] = buf[0];
tempXY[1][i] = buf[1];
}
for(k=0; k<2; k++)
{
for(i=0; i<SAMP_CNT-1; i++)
{
min=i;
for (j=i+1; j<SAMP_CNT; j++)
{
if (tempXY[k][min] > tempXY[k][j]) min=j;
}
temp = tempXY[k][i];
tempXY[k][i] = tempXY[k][min];
tempXY[k][min] = temp;
}
if((tempXY[k][SAMP_CNT_DIV2]-tempXY[k][SAMP_CNT_DIV2-1]) > 9)
return 1;
buf[k] = (tempXY[k][SAMP_CNT_DIV2]+tempXY[k][SAMP_CNT_DIV2-1]) / 2;
}
return 0;
}
static int DO_SPI_FLASH(int argc, char * const argv[])
{
uint32_t i;
int x,y;
#define SPI_FLASH_TEST_LEN (1024*512)
volatile uint8_t* buf_test = SRAM_START_ADDRESS;
uint32_t ret;
static struct spi_bus bus;
ret = kinetis_spi_bus_init(&bus, HW_SPI2);
ret = ads7843_init(&bus, 0);
ret = w25qxx_init(&bus, 1);
for(i=0;i<100;i++)
{
ads7843_readX(&x);
ads7843_readY(&y);
printf("X:%04d Y:%04d\r", x, y);
DelayMs(10);
}
/* probe w25qxx */
if(w25qxx_probe())
{
printf("no w25qxx deived found\r\n");
return 1;
}
printf("%s detected!\r\n", w25qxx_get_name());
/*
for(i=0;i<SPI_FLASH_TEST_LEN;i++)
{
buf_test[i] = i;
}
if(w25qxx_write(0, (uint8_t*)buf_test, SPI_FLASH_TEST_LEN))
{
printf("w25qxx write failed\r\n");
return 1;
}
memset((uint8_t*)buf_test,0, SPI_FLASH_TEST_LEN);
if(w25qxx_read(0, (uint8_t*)buf_test, SPI_FLASH_TEST_LEN))
{
printf("w25qxx read failed\r\n");
return 1;
}
for(i=0;i<SPI_FLASH_TEST_LEN;i++)
{
if(buf_test[i] != i%256)
{
printf("error:[0x%X]:%d\r\n", i, buf_test[i]);
}
}
*/
printf("spi flash test finish!\r\n");
return 0;
}