Merge pull request #11660 from shuopeng-deng/pr/spi-transfer-fix

Fix dropped bytes on spi write
ARMmbed · Oct 15, 2019 · a806237 · a806237
2 parents b54315e + 9f03a1c
commit a806237
Showing 1 changed file with 5 additions and 7 deletions.
diff --git a/targets/TARGET_Cypress/TARGET_PSOC6/cy_spi_api.c b/targets/TARGET_Cypress/TARGET_PSOC6/cy_spi_api.c
@@ -130,14 +130,12 @@ void spi_frequency(spi_t *obj, int hz)
 int spi_master_write(spi_t *obj, int value)
 {
     struct spi_s *spi = cy_get_spi(obj);
-    uint32_t received;
-    if (CY_RSLT_SUCCESS != cyhal_spi_send(&(spi->hal_spi), (uint32_t)value)) {
-        MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_SPI, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_spi_send");
-    }
-    if (CY_RSLT_SUCCESS != cyhal_spi_recv(&(spi->hal_spi), &received)) {
-        MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_SPI, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_spi_recv");
+    int received;
+
+    if (CY_RSLT_SUCCESS != cyhal_spi_transfer(&(spi->hal_spi), (const uint8_t *)&value, 1, (uint8_t *)&received, 1, 0xff)) {
+        MBED_ERROR(MBED_MAKE_ERROR(MBED_MODULE_DRIVER_SPI, MBED_ERROR_CODE_FAILED_OPERATION), "cyhal_spi_transfer");
     }
-    return (int)received;
+    return received;
 }
 
 int spi_master_block_write(spi_t *obj, const char *tx_buffer, int tx_length, char *rx_buffer, int rx_length, char write_fill)