wifi multiple antenna switch GPIO doesn't work on ESP32-S3 (IDFGH-8972)

[chndao77]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

I am trying add a FEM to esp32s3,
I found following code, works on ESP32 chip, but doesn't work on ESP32-S3,
no error report,
on ESP32 chip, tx/rx gpios work great,: when tx is high, rx is low, and when tx is low, rx is high
on ESP32-S3, tx/rx gpios keep low.
lastest esp-idf git version and lastest wifi lib.

`#include "driver/gpio.h"
#include "esp_rom_gpio.h"
void gpio_out_tx_status()
{
wifi_ant_gpio_config_t config_gpio;

//GPIO pull down initially for TX
esp_rom_gpio_pad_select_gpio(15);
gpio_set_direction(15, GPIO_MODE_OUTPUT);
gpio_set_level(15, 0);
//GPIO pull down initially for RX
esp_rom_gpio_pad_select_gpio(16);
gpio_set_direction(16, GPIO_MODE_OUTPUT);
gpio_set_level(16, 0);

config_gpio.gpio_cfg[0].gpio_select = 1;
config_gpio.gpio_cfg[0].gpio_num = 15;
config_gpio.gpio_cfg[1].gpio_select = 1;
config_gpio.gpio_cfg[1].gpio_num = 16;
wifi_ant_config_t config_ant = {
.rx_ant_mode = WIFI_ANT_MODE_ANT1,
.rx_ant_default = WIFI_ANT_MODE_ANT1,
.tx_ant_mode = WIFI_ANT_MODE_ANT0,
.enabled_ant0 = 1,
.enabled_ant1 = 2
};
esp_wifi_set_ant_gpio(&config_gpio);
esp_wifi_set_ant(&config_ant);
}

static int wifi_cmd_ap(int argc, char **argv)
{
int nerrors = arg_parse(argc, argv, (void **) &ap_args);

if (nerrors != 0) {
    arg_print_errors(stderr, ap_args.end, argv[0]);
    return 1;
}

wifi_cmd_ap_set(ap_args.ssid->sval[0], ap_args.password->sval[0]);
ESP_LOGI(TAG, "AP mode, %s %s", ap_args.ssid->sval[0], ap_args.password->sval[0]);

gpio_out_tx_status();
ESP_LOGI(TAG, "AP mode, load ATT config");    
return 0;

}`

[sbuto1]

Has there been any investigation into this issue? I can confirm it is present when using ESP-IDF v4.4.4 running on a ESP32-S3-DevKitC-1. The same code has no issue on a ESP32. I also tried a variety of GPIO pins on the board but all had the same behavior (net remains low at all times). Thanks

[MaxwellAlan]

Hi @sbuto1

Thanks for your report, we have fixed this bug internal. Plz wait for the fix to sync to Github.

Thanks.

[sbuto1]

@MaxwellAlan, thanks for checking on & fixing this issue! Since submitting this I also discovered that the ESP32-C3 also has the issue, so it is not specific to ESP32-S3 line - hopefully the fix is applied to both/all chip families.

FYI, there is also a small bug in the new wifi antenna example projects - I noted that in issue IDFGH-10851.

[Xiehanxin]

hi @sbuto1 could I close this issue? if there are any update can reopen it.

[sbuto1]

Hi @Xiehanxin , I'm not the original poster so I don't have the ability to close the issue. I did post a very similar issue, #12055 (which has not been marked as done). In both cases I still see the issue in the most recent public ESP-IDF release, v5.1.1. Have these issues been fixed in any public ESP-IDF commit? If not I would suggest keeping them open. Thanks!

[Xiehanxin]

sorry @sbuto1 ，we will give feedback to #12055, and hi @chndao77 ,could I close this issue? if there are any update can reopen it.

[mhdong]

Hi @chndao77 fix on master branch is available at 16ec599, we are also back porting to other release branches.
Will update further if any progress. Thanks.

[Alvin1Zhang]

Thanks for reporting, feel free to reopen.