Add setAnalogRead type & command handler. Add core analogRead function.

arduino/cores/esp32/wiring_analog.c

@@ -18,6 +18,7 @@
 */
 
 #include <driver/ledc.h>
+#include <driver/adc.h>
 
 #include "wiring_analog.h"
 
@@ -43,3 +44,11 @@ void analogWrite(uint32_t pin, uint32_t value)
   };
   ledc_channel_config(&ledc_conf);
 }
+
+int analogRead(uint32_t pin)
+{
+  adc1_config_width(ADC_WIDTH_BIT_12);
+  adc1_config_channel_atten(pin,ADC_ATTEN_DB_11);
+  int val = adc1_get_raw(pin);
+  return val;
+}

arduino/cores/esp32/wiring_analog.h

@@ -28,6 +28,8 @@ extern "C" {
 
 extern void analogWrite(uint32_t pin, uint32_t value);
 
+extern int analogRead(uint32_t pin);
+
 #ifdef __cplusplus
 }
 #endif

main/CommandHandler.cpp

@@ -1007,6 +1007,19 @@ int setDigitalRead(const uint8_t command[], uint8_t response[])
   return 6;
 }
 
+int setAnalogRead(const uint8_t command[], uint8_t response[])
+{
+  uint8_t pin = command[4];
+
+  int value = digitalRead(pin);
+
+  response[2] = 1; // number of parameters
+  response[3] = sizeof(value); // parameter 1 length
+  memcpy(&response[4], &value, sizeof(value));
+
+  return 5 + sizeof(value);
+}
+
 int wpa2EntSetIdentity(const uint8_t command[], uint8_t response[]) {
   char identity[32 + 1];
 
@@ -1125,7 +1138,7 @@ const CommandHandlerType commandHandlers[] = {
   setClientCert, setCertKey, NULL, NULL, sendDataTcp, getDataBufTcp, insertDataBuf, NULL, NULL, NULL, wpa2EntSetIdentity, wpa2EntSetUsername, wpa2EntSetPassword, wpa2EntSetCACert, wpa2EntSetCertKey, wpa2EntEnable,
 
   // 0x50 -> 0x5f
-  setPinMode, setDigitalWrite, setAnalogWrite, setDigitalRead,
+  setPinMode, setDigitalWrite, setAnalogWrite, setDigitalRead, setAnalogRead,
 };
 
 #define NUM_COMMAND_HANDLERS (sizeof(commandHandlers) / sizeof(commandHandlers[0]))