static bool iotjs_spi_open(iotjs_spi_t* spi) {
IOTJS_VALIDATED_STRUCT_METHOD(iotjs_spi_t, spi);
struct iotbus_spi_config_s cfg = {.bits_per_word = _this->bits_per_word,
.chip_select =
_this->chip_select == kSpiCsNone ? 0
: 1,
.frequency = _this->max_speed };
switch (_this->mode) {
case kSpiMode_0:
cfg.mode = IOTBUS_SPI_MODE0;
break;
case kSpiMode_1:
cfg.mode = IOTBUS_SPI_MODE1;
break;
case kSpiMode_2:
cfg.mode = IOTBUS_SPI_MODE2;
break;
case kSpiMode_3:
cfg.mode = IOTBUS_SPI_MODE3;
break;
default:
cfg.mode = IOTBUS_SPI_MODE0;
}
_this->hSpi = iotbus_spi_open(_this->bus, &cfg);
if (_this->hSpi == NULL) {
return false;
}
DDLOG(
"SPI Options \n mode: %d\n chipSelect: %d\n bitOrder: %d\n "
"maxSpeed: %d\n bitPerWord: %d\n loopback: %d",
_this->mode, _this->chip_select, _this->bit_order, _this->max_speed,
_this->bits_per_word, _this->loopback);
return true;
}
bool iotjs_spi_transfer(iotjs_spi_t* spi) {
IOTJS_VALIDATED_STRUCT_METHOD(iotjs_spi_t, spi);
int err =
iotbus_spi_transfer_buf(_this->hSpi, (unsigned char*)_this->tx_buf_data,
(unsigned char*)_this->rx_buf_data,
_this->buf_len);
if (err != 0) {
DDLOG("%s - transfer failed: %d", __func__, err);
return false;
}
return true;
}
/******************************
SPI TEST
******************************/
int systemio_test_spi(char *failstr)
{
int result = SYSIO_RESULT_FAIL;
int fail_flag = 0;
int ret;
iotbus_spi_context_h hSpi;
unsigned int bus = 0;
unsigned char txbuf[64] = { 0, };
unsigned char rxbuf[64] = { 0, };;
struct iotbus_spi_config_s config = {
(char)8,
0,
0,
12000000,
0,
};
hSpi = iotbus_spi_open(bus, &config);
if (!hSpi) {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_open() fail \n");
REGISTER_FAIL_REASON("iotbus_spi_open() fail", &fail_flag);
goto done;
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_open() success \n");
}
ret = iotbus_spi_write(hSpi, txbuf, 8);
if (ret != 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_write() fail \n");
REGISTER_FAIL_REASON("iotbus_spi_write() fail", &fail_flag);
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_write() success \n");
}
ret = iotbus_spi_recv(hSpi, rxbuf, 8);
if (ret != 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_recv() fail \n");
REGISTER_FAIL_REASON("iotbus_spi_recv() fail", &fail_flag);
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_recv() success \n");
}
#if 0
ret = iotbus_spi_transfer_buf(hSpi, txbuf, rxbuf, 16);
if (ret != 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_transfer_buf() fail \n");
REGISTER_FAIL_REASON("iotbus_spi_transfer_buf() fail");
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_transfer_buf() success \n");
}
#endif
ret = iotbus_spi_close(hSpi);
if (ret != 0) {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_close() fail \n");
REGISTER_FAIL_REASON("iotbus_spi_close() fail", &fail_flag);
} else {
SYSIO_DEBUG("[IOTAPI] iotbus_spi_close() success \n");
}
done:
/* check if succeed */
if (fail_flag == 0) {
result = SYSIO_RESULT_SUCCESS;
}
return result;
}