Merge branch 'bugfix/uart_tx_voltage_fluctuation_during_light_sleep_v…

…3.4.0.0' into 'release/v3.4.0.0' fix: Fixed a potential uart tx voltage fluctuation issue during light-sleep (v3.4.0.0) See merge request application/esp-at!1703
espressif · Dec 31, 2024 · ff7bc28 · ff7bc28
2 parents e671f83 + 81c1598
commit ff7bc28
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/main/interface/uart/at_uart_api.c b/main/interface/uart/at_uart_api.c
@@ -243,6 +243,9 @@ void at_uart_workaround(void)
     // a workaround for uart1 outputs uninterrupted data during light-sleep
     PIN_SLP_INPUT_ENABLE(GPIO_PIN_MUX_REG[g_uart_port_pin.rx_pin]);
     gpio_sleep_set_pull_mode(g_uart_port_pin.rx_pin, GPIO_PULLUP_ONLY);
+
+    // a workaround for uart1 tx voltage fluctuation issue during light-sleep
+    gpio_sleep_sel_dis(g_uart_port_pin.tx_pin);
 }
 
 void at_uart_config_init(uart_config_t *config)