Mirrors/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2026-10-02 11:10:54 +03:00
Code Issues Packages Projects Releases Wiki Activity

feat(spi): support data output inversion

Browse Source
This commit is contained in:
Steven (Yang Minghui)
2026-09-11 15:39:46 +08:00
parent 27506a49bc
commit 605637b86e
6 changed files with 86 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/esp_driver_spi/test_apps/master/main/test_spi_master.c
+54
View File
@@ -19,6 +19,7 @@
#include "esp_memory_utils.h"
#include "esp_private/spi_common_internal.h"
#include "esp_private/esp_clk.h"
#include "esp_private/gpio.h"
#include "esp_private/sleep_cpu.h"
#include "esp_private/esp_sleep_internal.h"
#include "esp_private/esp_pmu.h"
@@ -697,6 +698,59 @@ TEST_CASE("spi bus setting with different pin configs", "[spi]")
#endif
}
TEST_CASE("spi data output inversion", "[spi]")
{
for (int invert = 0; invert < 2; invert++) {
ESP_LOGI(TAG, "Testing data output inversion: %s", invert ? "enabled" : "disabled");
spi_bus_config_t buscfg = SPI_BUS_TEST_DEFAULT_CONFIG();
buscfg.data_io_default_level = false;
buscfg.flags |= invert ? SPICOMMON_BUSFLAG_DATA_OUT_INV : 0;
spi_device_interface_config_t devcfg = SPI_DEVICE_TEST_DEFAULT_CONFIG();
spi_device_handle_t handle = NULL;
TEST_ESP_OK(spi_bus_initialize(TEST_SPI_HOST, &buscfg, SPI_DMA_DISABLED));
TEST_ESP_OK(spi_bus_add_device(TEST_SPI_HOST, &devcfg, &handle));
if (invert) {
const spi_bus_attr_t *bus_attr = spi_bus_get_attr(TEST_SPI_HOST);
TEST_ASSERT_TRUE(bus_attr->flags & SPICOMMON_BUSFLAG_GPIO_PINS);
}
/* Check inversion during a transaction. Add MOSI-to-MISO loopback after bus initialization to preserve the selected MOSI output route. */
TEST_ESP_OK(gpio_matrix_input(buscfg.mosi_io_num, spi_periph_signal[TEST_SPI_HOST].spiq_in, false));
uint8_t tx_data = 0xA5;
uint8_t rx_data = 0;
spi_transaction_t trans = {
.length = sizeof(tx_data) * 8,
.tx_buffer = &tx_data,
.rx_buffer = &rx_data,
};
TEST_ESP_OK(spi_device_polling_transmit(handle, &trans));
uint8_t expected_rx_data = invert ? 0x5A : 0xA5;
ESP_LOGI(TAG, "Loopback: TX=0x%02X, RX=0x%02X (expected=0x%02X)",
(unsigned)tx_data, (unsigned)rx_data, (unsigned)expected_rx_data);
TEST_ASSERT_EQUAL_HEX8(expected_rx_data, rx_data);
/* Check the MOSI idle level after the transaction. */
bool expected_idle_level = buscfg.data_io_default_level;
#if !SPI_LL_MOSI_FREE_LEVEL
if (invert) {
/* GPIO Matrix inversion also affects the idle level when the target cannot configure it. */
expected_idle_level = !buscfg.data_io_default_level;
}
#endif
int actual_idle_level = gpio_get_level(PIN_NUM_MOSI);
ESP_LOGI(TAG, "Idle: MOSI=%d (expected=%d)", actual_idle_level, expected_idle_level);
TEST_ASSERT_EQUAL_INT(expected_idle_level, actual_idle_level);
TEST_ESP_OK(spi_bus_remove_device(handle));
TEST_ESP_OK(spi_bus_free(TEST_SPI_HOST));
}
}
TEST_CASE("SPI Master no response when switch from host1 (SPI2) to host2 (SPI3)", "[spi]")
{
//spi config