Merge branch 'bugfix/uart_tx_voltage_fluctuation_during_light_sleep' into 'master'

xcguang · xcguang · commit 310b803497b5 · 2024-12-31T14:48:29.000+08:00
fix: Fixed a potential uart tx voltage fluctuation issue during light-sleep

See merge request application/esp-at!1693
diff --git a/main/interface/uart/at_uart_api.c b/main/interface/uart/at_uart_api.c
@@ -247,6 +247,9 @@ 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)

Original file line number	Diff line number	Diff line change
`@@ -247,6 +247,9 @@ void at_uart_workaround(void)`
`247`	`247`	`// a workaround for uart1 outputs uninterrupted data during light-sleep`
`248`	`248`	`PIN_SLP_INPUT_ENABLE(GPIO_PIN_MUX_REG[g_uart_port_pin.rx_pin]);`
`249`	`249`	`gpio_sleep_set_pull_mode(g_uart_port_pin.rx_pin, GPIO_PULLUP_ONLY);`
	`250`	`+`
	`251`	`+ // a workaround for uart1 tx voltage fluctuation issue during light-sleep`
	`252`	`+ gpio_sleep_sel_dis(g_uart_port_pin.tx_pin);`
`250`	`253`	`}`
`251`	`254`
`252`	`255`	`void at_uart_config_init(uart_config_t *config)`