fix(tests): Fix GPIO and PeriMan tests

libraries/ESP_I2S/src/ESP_I2S.cpp

@@ -192,6 +192,7 @@ static esp_err_t i2s_channel_read_16_stereo_to_mono(i2s_chan_handle_t handle, ch
 
 I2SClass::I2SClass() {
   last_error = ESP_OK;
+  _mode = I2S_MODE_MAX;  // Initialize to invalid mode to indicate I2S not started
 
   tx_chan = NULL;
   tx_sample_rate = 0;
@@ -239,7 +240,9 @@ I2SClass::~I2SClass() {
 
 bool I2SClass::i2sDetachBus(void *bus_pointer) {
   I2SClass *bus = (I2SClass *)bus_pointer;
-  if (bus->tx_chan != NULL || bus->tx_chan != NULL) {
+  // Only call end() if I2S has been initialized (begin() was called)
+  // _mode is set to I2S_MODE_MAX in constructor and to a valid mode in begin()
+  if (bus->_mode < I2S_MODE_MAX) {
     bus->end();
   }
   return true;
@@ -703,6 +706,16 @@ bool I2SClass::begin(i2s_mode_t mode, uint32_t rate, i2s_data_bit_width_t bits_c
 }
 
 bool I2SClass::end() {
+  // Check if already ended to prevent recursion
+  if (_mode >= I2S_MODE_MAX) {
+    return true;
+  }
+
+  // Save mode and reset it BEFORE clearing pins to prevent recursive calls
+  // When perimanClearPinBus() is called, it may trigger i2sDetachBus() again
+  i2s_mode_t mode = _mode;
+  _mode = I2S_MODE_MAX;
+
   if (tx_chan != NULL) {
     I2S_ERROR_CHECK_RETURN_FALSE(i2s_channel_disable(tx_chan));
     I2S_ERROR_CHECK_RETURN_FALSE(i2s_del_channel(tx_chan));
@@ -720,7 +733,7 @@ bool I2SClass::end() {
   }
 
   //Peripheral manager deinit used pins
-  switch (_mode) {
+  switch (mode) {
     case I2S_MODE_STD:
 #if SOC_I2S_SUPPORTS_TDM
     case I2S_MODE_TDM:

tests/validation/gpio/gpio.ino

@@ -13,7 +13,6 @@
 
 volatile int interruptCounter = 0;
 volatile bool interruptFlag = false;
-volatile unsigned long lastInterruptTime = 0;
 
 // Variables for interrupt with argument test
 volatile int argInterruptCounter = 0;
@@ -34,7 +33,6 @@ void waitForSyncAck(const String &token = "OK") {
 void setUp(void) {
   interruptCounter = 0;
   interruptFlag = false;
-  lastInterruptTime = 0;
   argInterruptCounter = 0;
   argInterruptFlag = false;
   receivedArg = 0;
@@ -43,22 +41,14 @@ void setUp(void) {
 void tearDown(void) {}
 
 void IRAM_ATTR buttonISR() {
-  unsigned long currentTime = millis();
-  if (currentTime - lastInterruptTime > 50) {
-    interruptCounter = interruptCounter + 1;
-    interruptFlag = true;
-    lastInterruptTime = currentTime;
-  }
+  interruptCounter = interruptCounter + 1;
+  interruptFlag = true;
 }
 
 void IRAM_ATTR buttonISRWithArg(void *arg) {
-  unsigned long currentTime = millis();
-  if (currentTime - lastInterruptTime > 50) {
-    argInterruptCounter = argInterruptCounter + 1;
-    argInterruptFlag = true;
-    receivedArg = *(int *)arg;
-    lastInterruptTime = currentTime;
-  }
+  argInterruptCounter = argInterruptCounter + 1;
+  argInterruptFlag = true;
+  receivedArg = *(int *)arg;
 }
 
 void test_read_basic(void) {

tests/validation/i2c_master/i2c_master.ino

@@ -108,7 +108,7 @@ void ds1307_get_time(uint8_t *sec, uint8_t *min, uint8_t *hour, uint8_t *day, ui
 void ds1307_set_time(uint8_t sec, uint8_t min, uint8_t hour, uint8_t day, uint8_t month, uint16_t year) {
   Wire.beginTransmission(DS1307_ADDR);
   Wire.write(0x00);
-  Wire.write(DEC2BCD(sec));
+  Wire.write(DEC2BCD(sec) | 0x80);  //Set halt bit to stop clock
   Wire.write(DEC2BCD(min));
   Wire.write(DEC2BCD(hour));
   Wire.write(DEC2BCD(0));  //Ignore day of week
@@ -212,6 +212,22 @@ void change_clock() {
   TEST_ASSERT_EQUAL(start_day, read_day);
   TEST_ASSERT_EQUAL(start_month, read_month);
   TEST_ASSERT_EQUAL(start_year, read_year);
+
+  //Run clock for 5 seconds to check that we can write
+  ds1307_start();
+  delay(5000);
+  ds1307_stop();
+
+  //Get time
+  ds1307_get_time(&read_sec, &read_min, &read_hour, &read_day, &read_month, &read_year);
+
+  //Check time
+  TEST_ASSERT_NOT_EQUAL(start_sec, read_sec);  //Seconds should have changed
+  TEST_ASSERT_EQUAL(start_min, read_min);
+  TEST_ASSERT_EQUAL(start_hour, read_hour);
+  TEST_ASSERT_EQUAL(start_day, read_day);
+  TEST_ASSERT_EQUAL(start_month, read_month);
+  TEST_ASSERT_EQUAL(start_year, read_year);
 }
 
 void swap_pins() {

tests/validation/periman/periman.ino

@@ -10,6 +10,8 @@
  * - ETH: ETH requires a ethernet port to be connected before the pins are attached
  */
 
+#include <Arduino.h>
+
 #if SOC_I2S_SUPPORTED
 #include "ESP_I2S.h"
 #endif
@@ -71,7 +73,10 @@ void setup_test(String test_name, int8_t rx_pin = UART1_RX_DEFAULT, int8_t tx_pi
 
   pinMode(uart1_rx_pin, INPUT_PULLUP);
   pinMode(uart1_tx_pin, OUTPUT);
+  // Ensure Serial1 is initialized and callback is set (in case it was terminated previously)
   Serial1.setPins(uart1_rx_pin, uart1_tx_pin);
+  Serial1.begin(115200);
+  Serial1.onReceive(onReceive_cb);
   uart_internal_loopback(1, uart1_rx_pin);
   delay(100);
   log_v("Running %s test", test_name.c_str());
@@ -86,12 +91,16 @@ void teardown_test(void) {
     Serial1.print(current_test);
     Serial1.println(" test: This should not be printed");
     Serial1.flush();
-
-    Serial1.setPins(uart1_rx_pin, uart1_tx_pin);
-    uart_internal_loopback(1, uart1_rx_pin);
-    delay(100);
   }
 
+  // Even if test didn't execute, ensure Serial1 is initialized
+  // (in case it was terminated by a previous test or setup issue)
+  Serial1.setPins(uart1_rx_pin, uart1_tx_pin);
+  Serial1.begin(115200);
+  Serial1.onReceive(onReceive_cb);
+  uart_internal_loopback(1, uart1_rx_pin);
+  delay(100);
+
   Serial1.print(current_test);
   Serial1.println(" test: This should be printed");
   Serial1.flush();