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more workin' on i2c

This commit is contained in:
ladyada 2019-10-09 16:51:17 -04:00
parent c9632ab73c
commit 2213c03439
2 changed files with 37 additions and 9 deletions
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11
Adafruit_GPS.cpp
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@ -383,9 +383,7 @@ float Adafruit_GPS::secondsSinceDate() {
size_t Adafruit_GPS::available(void) {
char c = 0;
if (paused) return c;
if (paused) return 0;
#if (defined(__AVR__) || defined(ESP8266)) && defined(USE_SW_SERIAL)
if (gpsSwSerial) {
@ -398,7 +396,7 @@ size_t Adafruit_GPS::available(void) {
if (gpsI2C) {
return 1; // I2C doesnt have 'availability' so always has a byte at least to read!
}
return false;
return 0;
}
size_t Adafruit_GPS::write(uint8_t c) {
@ -476,10 +474,6 @@ char Adafruit_GPS::read(void) {
//Serial.print(c);
// if (c == '$') { //please don't eat the dollar sign - rdl 9/15/14
// currentline[lineidx] = 0;
// lineidx = 0;
// }
currentline[lineidx++] = c;
if (lineidx >= MAXLINELENGTH)
lineidx = MAXLINELENGTH-1; // ensure there is someplace to put the next received character
@ -592,7 +586,6 @@ bool Adafruit_GPS::begin(uint32_t baud_or_i2caddr)
} else {
_i2caddr = baud_or_i2caddr;
}
gpsI2C->setClock(400000);
// A basic scanner, see if it ACK's
gpsI2C->beginTransmission(_i2caddr);
return (gpsI2C->endTransmission () == 0);

35
examples/GPS_I2C_OLEDdebug/GPS_I2C_OLEDdebug.ino Normal file
View File

@ -0,0 +1,35 @@
// Test code for Adafruit GPS That Support Using I2C
//
// This code shows how to test a passthru between USB and I2C
//
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
#include <Adafruit_GPS.h>
// Connect to the GPS on the hardware I2C port
Adafruit_GPS GPS(&Wire);
void setup() {
// wait for hardware serial to appear
while (!Serial);
// make this baud rate fast enough to we aren't waiting on it
Serial.begin(115200);
Serial.println("Adafruit GPS library basic I2C test!");
GPS.begin(0x10); // The I2C address to use is 0x10
}
void loop() {
if (Serial.available()) {
char c = Serial.read();
GPS.write(c);
}
if (GPS.available()) {
char c = GPS.read();
Serial.write(c);
}
}