Dear all,
We are about to attach temp sensor(MAX31855) on RB02(QCA4010) module throuh SPI.
However, we met a problem about how we will use SPI. Because we don't have any example about SPI use except test spi flash.
Please advice a guide for use SPI in RB02.
Thanks,
Todd
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Dear Customer,
/*-------------------------------------------------------------*/
int test_spi_read_max31855_cs=SPI_CS_1;
int test_spi_read_max31855_init=0;
void test_spi_read_max31855(unsigned char *buf, int size)
{
A_UINT32 req[1];
if(!test_spi_read_max31855_init)
{
qcom_spi_init(test_spi_read_max31855_cs, SPI_MOSI_1, SPI_MISO_1, SPI_SCLK_1, SPI_FREQ_400K);
}
req[0] = 0; //0x9f;
qcom_spi_request(req,4,0);
qcom_spi_response(buf,(unsigned int )size);
}
Void test_main(void)
{
unsigned int val=0;
test_spi_read_max31855((unsigned char *)&val, 4);
/* convert the data */
unsigned int output;
output = ((val&0xff)<<24) | (((val>>8)&0xff)<<16) | (((val>>16)&0xff)<<8) | (((val>>24)&0xff));
SWAT_PTF("%s: get val 0x%x\n", __func__, output);
}
/*-------------------------------------------------------------*/
/*
When using mp1 board, please connect as:
CS : jp4.12
SCK: jp4.4
SO : jp4.2
*/
int test_spi_read_max31855_cs=SPI_CS_1;
int test_spi_read_max31855_init=0;
void test_spi_read_max31855(unsigned char *buf, int size)
{
A_UINT32 req[1];
if(!test_spi_read_max31855_init)
{
qcom_spi_init(test_spi_read_max31855_cs, SPI_MOSI_1, SPI_MISO_1, SPI_SCLK_1, SPI_FREQ_400K);
}
req[0] = 0; //0x9f;
qcom_spi_request(req,4,0);
qcom_spi_response(buf,(unsigned int )size);
if(!test_spi_read_max31855_init)
{
qcom_spi_fini();
}
}
Regards,
Ray