DigitalInfinity/ESP32-PaxCounter
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

I2C gps testing

Browse Source
This commit is contained in:
Klaus K Wilting 2018-06-17 16:25:29 +02:00
parent bb37aba2c3
commit 85e9368c6e
3 changed files with 29 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
platformio.ini
View File

@ -15,8 +15,8 @@
;env_default = ttgov1
;env_default = ttgov2
;env_default = ttgov21
;env_default = ttgobeam
env_default = lopy
env_default = ttgobeam
;env_default = lopy
;env_default = lopy4
;env_default = fipy
;env_default = lolin32lite
@ -143,6 +143,7 @@ upload_speed = 921600
lib_deps =
${common_env_data.lib_deps_all}
${common_env_data.lib_deps_rgbled}
${common_env_data.lib_deps_gps}
build_flags =
${common_env_data.build_flags}
-include "src/hal/lopy.h"
@ -157,6 +158,7 @@ upload_speed = 921600
lib_deps =
${common_env_data.lib_deps_all}
${common_env_data.lib_deps_rgbled}
${common_env_data.lib_deps_gps}
build_flags =
${common_env_data.build_flags}
-include "src/hal/lopy4.h"

38
src/gpsread.cpp
View File

@ -1,6 +1,7 @@
#ifdef HAS_GPS
#include "globals.h"
#include <Wire.h>
// Local logging tag
static const char TAG[] = "main";
@ -22,8 +23,8 @@ void gps_loop(void *pvParameters) {
// initialize and, if needed, configure, GPS
#if defined GPS_SERIAL
HardwareSerial GPS_Serial(1);
#elif defined GPS_I2C
// to be done
#elif defined GPS_QUECTEL_L76
Wire.begin(GPS_QUECTEL_L76, 400000); // I2C connect to GPS device with 400
#endif
while (1) {
@ -44,30 +45,29 @@ void gps_loop(void *pvParameters) {
// after GPS function was disabled, close connect to GPS device
GPS_Serial.end();
#elif defined GPS_I2C
#elif defined GPS_QUECTEL_L76
// I2C connect to GPS device with 100 kHz
Wire.begin(GPS_I2C_PINS, 100000);
Wire.beginTransmission(GPS_I2C_ADDRESS_WRITE);
Wire.write(0x00);
Wire.write(0x00); // dummy write to start read
Wire.endTransmission();
i2c_ret == Wire.beginTransmission(GPS_I2C_ADDRESS_READ);
if (i2c_ret == 0) { // check if device seen on i2c bus
while (cfg.gpsmode) {
// feed GPS decoder with serial NMEA data from GPS device
while (Wire.available()) {
Wire.requestFrom(GPS_I2C_ADDRESS_READ, 255);
gps.encode(Wire.read());
vTaskDelay(1 / portTICK_PERIOD_MS); // reset watchdog
}
Wire.beginTransmission(GPS_I2C_ADDRESS_READ);
while (cfg.gpsmode) {
Wire.requestFrom(GPS_I2C_ADDRESS_READ, 32);
while (Wire.available()) {
gps.encode(Wire.read());
vTaskDelay(500 / portTICK_PERIOD_MS); // polling mode: 500ms sleep
}
// after GPS function was disabled, close connect to GPS device
Wire.endTransmission();
Wire.setClock(400000); // Set back to 400KHz to speed up OLED
ESP_LOGI(TAG, "GPS NMEA data: passed %d / failed: %d / with fix: %d",
gps.passedChecksum(), gps.failedChecksum(),
gps.sentencesWithFix());
}
// after GPS function was disabled, close connect to GPS device
#endif
Wire.endTransmission();
#endif // GPS Type
}
vTaskDelay(1 / portTICK_PERIOD_MS); // reset watchdog

12
src/hal/lopy.h
View File

@ -7,12 +7,12 @@
// !!EXPERIMENTAL - not tested yet!!
// uncomment this only if your LoPy runs on a Pytrack expansion board with GPS
// see http://www.quectel.com/UploadImage/Downlad/Quectel_L76-L_I2C_Application_Note_V1.0.pdf
//#define HAS_GPS 1
//#define GPS_I2C_PINS GPIO_NUM_25, GPIO_NUM_26 // SDA (P22), SCL (P21)
//#define GPS_I2C_ADDRESS_READ 0x21
//#define GPS_I2C_ADDRESS_WRITE 0x20
//#define HAS_BUTTON GPIO_NUM_37 // (P14)
//define BUTTON_PULLUP 1 // Button need pullup instead of default pulldown
#define HAS_GPS 1
#define GPS_QUECTEL_L76 GPIO_NUM_25, GPIO_NUM_26 // SDA (P22), SCL (P21)
#define GPS_I2C_ADDRESS_READ 0x21
#define GPS_I2C_ADDRESS_WRITE 0x20
#define HAS_BUTTON GPIO_NUM_37 // (P14)
#define BUTTON_PULLUP 1 // Button need pullup instead of default pulldown
// Hardware pin definitions for Pycom LoPy board
#define PIN_SPI_SS GPIO_NUM_17