FONA 808 (#2542) RST Question

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silverstar
 
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Joined: Tue Feb 04, 2014 10:46 pm

FONA 808 (#2542) RST Question

Post by silverstar »

My FONA is wired to a Mega. The Pinouts for the FONA board make no mention of the RST but there is mention of the "Reset" which I take to be the RST. It seems as though the RST (Reset) is not required to be connected to anything for normal operation yet it appears to be needed as shown in the following:

Code: Select all

define FONA_RX 19
#define FONA_TX 18
#define FONA_RST 20
char replybuffer[255];
HardwareSerial *fonaSerial = &Serial1;
Adafruit_FONA fona = Adafruit_FONA(FONA_RST);
The following is the code I use to determine if there are incoming SMS messages"
int Check_For_Texts () {
int8_t smsnum = fona.getNumSMS();
if (smsnum == -1){
Serial.println (F("SMS read fail"));
digitalWrite (Text_RX,HIGH);
digitalWrite (Environment,HIGH);
while(1);
}
return smsnum;
}( This test fails if the RST pin is connected. Remove the connection and it works.

How should I wire the RST (Reset)?

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