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Add support for hard reset through dedicated pin. #125

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Add support for hard reset through dedicated pin. #125

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17 changes: 17 additions & 0 deletions src/utility/EspDrv.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,14 @@ void EspDrv::wifiDriverInit(Stream *espSerial)
LOGDEBUG(F("> wifiDriverInit"));

EspDrv::espSerial = espSerial;

#ifdef WL_HARD_RESET_PIN
// Hard reset the ESP8266 to get it into a defined state
pinMode(WL_HARD_RESET_PIN, OUTPUT);
digitalWrite(WL_HARD_RESET_PIN, LOW);
delay(500);
digitalWrite(WL_HARD_RESET_PIN, HIGH);
#endif

bool initOK = false;

Expand Down Expand Up @@ -115,8 +123,17 @@ void EspDrv::reset()
{
LOGDEBUG(F("> reset"));

#ifdef WL_HARD_RESET_PIN
// Issue a hard reset
digitalWrite(WL_HARD_RESET_PIN, LOW);
delay(500);
digitalWrite(WL_HARD_RESET_PIN, HIGH);
delay(2500);
#else
// Issue a soft reset
sendCmd(F("AT+RST"));
delay(3000);
#endif
espEmptyBuf(false); // empty dirty characters from the buffer

// disable echo of commands
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9 changes: 8 additions & 1 deletion src/utility/EspDrv.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,14 @@ along with The Arduino WiFiEsp library. If not, see

#include "RingBuffer.h"


/*
* Pin for ESP8266 hard reset
* Connect this to the ESP8266's CH_PD line (taking care of the voltage
* differential, either through a converter or through a resistor bridge,
* just like you did for the ESP8266's RX line)
* If undefined, we will be relying entirely on soft reset (AT+RST)
*/
//#define WL_HARD_RESET_PIN 10

// Maximum size of a SSID
#define WL_SSID_MAX_LENGTH 32
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