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test: drivers: spi: added a test case

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Added a test case for calling spi_transceive() with a null tx buffer

Signed-off-by: David D <a8961713@gmail.com>
This commit is contained in:
David D 2020-01-16 07:31:56 +02:00 • committed by Anas Nashif
commit 22326f6d99
2 changed files with 60 additions and 0 deletions
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2
tests/drivers/spi/spi_loopback/boards/nucleo_f413zh.conf Normal file
View file

@ -0,0 +1,2 @@
CONFIG_SPI_LOOPBACK_DRV_NAME="SPI_1"
CONFIG_SPI_STM32_INTERRUPT=y

58
tests/drivers/spi/spi_loopback/src/spi.c
View file

@ -142,6 +142,62 @@ static int spi_complete_loop(struct device *dev, struct spi_config *spi_conf)
return 0;
}
static int spi_null_tx_buf(struct device *dev, struct spi_config *spi_conf)
{
static const u8_t EXPECTED_NOP_RETURN_BUF[BUF_SIZE] = { 0 };
(void)memset(buffer_rx, 0x77, BUF_SIZE);
const struct spi_buf tx_bufs[] = {
{
/*
* According to documentation, when sending NULL tx buf -
* NOP frames should be sent on MOSI line
*/
.buf = NULL,
.len = BUF_SIZE,
},
};
const struct spi_buf rx_bufs[] = {
{
.buf = buffer_rx,
.len = BUF_SIZE,
},
};
const struct spi_buf_set tx = {
.buffers = tx_bufs,
.count = ARRAY_SIZE(tx_bufs)
};
const struct spi_buf_set rx = {
.buffers = rx_bufs,
.count = ARRAY_SIZE(rx_bufs)
};
int ret;
LOG_INF("Start");
ret = spi_transceive(dev, spi_conf, &tx, &rx);
if (ret) {
LOG_ERR("Code %d", ret);
zassert_false(ret, "SPI transceive failed");
return ret;
}
if (memcmp(buffer_rx, EXPECTED_NOP_RETURN_BUF, BUF_SIZE)) {
to_display_format(buffer_rx, BUF_SIZE, buffer_print_rx);
LOG_ERR("Rx Buffer should contain NOP frames but got: %s",
buffer_print_rx);
zassert_false(1, "Buffer not as expected");
return -1;
}
LOG_INF("Passed");
return 0;
}
static int spi_rx_half_start(struct device *dev, struct spi_config *spi_conf)
{
const struct spi_buf tx_bufs[] = {
@ -462,6 +518,7 @@ void test_spi_loopback(void)
#endif
if (spi_complete_loop(spi_slow, &spi_cfg_slow) ||
spi_null_tx_buf(spi_slow, &spi_cfg_slow) ||
spi_rx_half_start(spi_slow, &spi_cfg_slow) ||
spi_rx_half_end(spi_slow, &spi_cfg_slow) ||
spi_rx_every_4(spi_slow, &spi_cfg_slow)
@ -473,6 +530,7 @@ void test_spi_loopback(void)
}
if (spi_complete_loop(spi_fast, &spi_cfg_fast) ||
spi_null_tx_buf(spi_fast, &spi_cfg_fast) ||
spi_rx_half_start(spi_fast, &spi_cfg_fast) ||
spi_rx_half_end(spi_fast, &spi_cfg_fast) ||
spi_rx_every_4(spi_fast, &spi_cfg_fast)