v1.8.34 (power on/off features for T-BEAM V10)

include/power.h

@@ -9,16 +9,16 @@
 #define DEFAULT_VREF 1100 // tbd: use adc2_vref_to_gpio() for better estimate
 #define NO_OF_SAMPLES 64  // we do some multisampling to get better values
 
-#ifdef HAS_PMU
-#include <axp20x.h>
-void pover_event_IRQ(void);
-void AXP192_power(bool on);
-#endif
-
-void AXP192_init(void);
-void AXP192_displaypower(void);
 uint16_t read_voltage(void);
 void calibrate_voltage(void);
 bool batt_sufficient(void);
 
+#ifdef HAS_PMU
+#include <axp20x.h>
+void power_event_IRQ(void);
+void AXP192_power(bool on);
+void AXP192_init(void);
+void AXP192_showstatus(void);
+#endif // HAS_PMU
+
 #endif

platformio.ini

@@ -43,7 +43,7 @@ description = Paxcounter is a device for metering passenger flows in realtime. I
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 1.8.31
+release_version = 1.8.34
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 3
@@ -55,7 +55,7 @@ platform_espressif32 = espressif32@1.10.0
 monitor_speed = 115200
 upload_speed = 115200
 lib_deps_lora =
-    ;MCCI LoRaWAN LMIC library@2.3.2
+    ;MCCI LoRaWAN LMIC library@3.1.0
     https://github.com/mcci-catena/arduino-lmic.git#852f348
 lib_deps_display =
     U8g2@>=2.26.13
@@ -73,8 +73,9 @@ lib_deps_basic =
     76@>=1.2.2 ;Timezone by Jack Christensen
     274@>=2.3.3 ;RTC by Michael Miller
     SimpleButton
-    ;AXP202X_Library@^1.0.0
+    ;AXP202X_Library@^1.0.1
-    https://github.com/cyberman54/AXP202X_Library.git
+    https://github.com/lewisxhe/AXP202X_Library.git#8045ddf
+    ;https://github.com/cyberman54/AXP202X_Library.git#b7116de
 lib_deps_all =
     ${common.lib_deps_basic}
     ${common.lib_deps_lora}
@@ -120,6 +121,4 @@ upload_protocol = esptool
 upload_protocol = esptool
 build_type = debug
 platform = https://github.com/platformio/platform-espressif32.git#develop
-platform_packages =
+platform_packages = framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git
-  ; use upstream Git version
-  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git

src/cyclic.cpp

@@ -62,10 +62,7 @@ void doHousekeeping() {
   else
     ESP_LOGI(TAG, "Battery: %dmV", batt_voltage);
 #ifdef HAS_PMU
-  if (I2C_MUTEX_LOCK()) {
+  AXP192_showstatus();
-    AXP192_displaypower();
-    I2C_MUTEX_UNLOCK();
-  }
 #endif
 #endif
 

src/display.cpp

@@ -179,6 +179,9 @@ void draw_page(time_t t, uint8_t page) {
 // update Battery status (line 2)
 #if (defined BAT_MEASURE_ADC || defined HAS_PMU)
     u8x8.setCursor(0, 2);
+    if (batt_voltage == 0xffff)
+      u8x8.printf("B:USB  ");
+    else
       u8x8.printf("B:%.2fV", batt_voltage / 1000.0);
 #endif
 
@@ -204,10 +207,10 @@ void draw_page(time_t t, uint8_t page) {
 #endif
 
 #if (HAS_LORA)
-    u8x8.setCursor(11, 3);
+    u8x8.setCursor(12, 3);
     if (!cfg.adrmode) // if ADR=off then display SF value inverse
       u8x8.setInverseFont(1);
-    u8x8.printf("%4s", getSfName(updr2rps(LMIC.datarate)));
+    u8x8.printf("%-4s", getSfName(updr2rps(LMIC.datarate)));
     if (!cfg.adrmode) // switch off inverse if it was turned on
       u8x8.setInverseFont(0);
 #endif // HAS_LORA

src/hal/ttgobeam10.h

@@ -7,9 +7,24 @@
 
 #include <stdint.h>
 
-// Hardware related definitions for TTGO T-Beam board
+/* 
-// (only) for newer T-Beam version T22_V10
+Hardware related definitions for TTGO T-Beam board
-// pinouts taken from https://github.com/lewisxhe/TTGO-T-Beam
+(only) for newer T-Beam version T22_V10
+pinouts taken from https://github.com/lewisxhe/TTGO-T-Beam
+
+/// Button functions: ///
+Power, short press -> set device on (toggles display while device is on)
+Power, long press -> set device off
+User, short press -> flip display page 
+User, long press -> send LORA message
+Reset -> reset device
+*/
+
+//#define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
+#define MY_OLED_SDA SDA
+#define MY_OLED_SCL SCL
+#define MY_OLED_RST U8X8_PIN_NONE
+//#define DISPLAY_FLIP  1 // use if display is rotated
 
 #define HAS_LORA 1       // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1 // HPD13A LoRa SoC
@@ -30,16 +45,30 @@
 //#define HAS_BME680 SDA, SCL
 //#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // !! connect SDIO of BME680 to GND !!
 
-// display (if connected)
-//#define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
-//#define MY_OLED_SDA SDA
-//#define MY_OLED_SCL SCL
-//#define MY_OLED_RST U8X8_PIN_NONE
-//#define DISPLAY_FLIP  1 // use if display is rotated
-
 // user defined sensors (if connected)
 //#define HAS_SENSORS 1 // comment out if device has user defined sensors
 
 //#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
 
 #endif
+
+/*
+
+// T-Beam V10 has on board power management by AXP192 PMU chip:
+//
+// DCDC1 0.7-3.5V @ 1200mA -> OLED
+// DCDC3 0.7-3.5V @ 700mA -> ESP32 (keep this on!)
+// LDO1 30mA -> GPS Backup
+// LDO2 200mA -> LORA
+// LDO3 200mA -> GPS
+
+// Wiring for I2C OLED display:
+//
+// Signal     Header   OLED
+// 3V3         7       VCC
+// GND         8       GND
+// IO22(SCL)   9       SCL
+// IO21(SDA)   10      SDA
+//
+
+*/

src/irqhandler.cpp

@@ -66,7 +66,7 @@ void irqHandler(void *pvParameters) {
 // do we have a power event?
 #if (HAS_PMU)
     if (InterruptStatus & PMU_IRQ)
-      pover_event_IRQ();
+      power_event_IRQ();
 #endif
 
     // is time to send the payload?

src/power.cpp

@@ -9,9 +9,12 @@ static const char TAG[] = __FILE__;
 
 AXP20X_Class pmu;
 
-void pover_event_IRQ(void) {
+void power_event_IRQ(void) {
-  // block i2c bus access
+
-  if (I2C_MUTEX_LOCK()) {
+  if (!I2C_MUTEX_LOCK())
+    ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
+  else {
+
     pmu.readIRQ();
     // put your power event handler code here
 
@@ -36,47 +39,46 @@ void pover_event_IRQ(void) {
     if (pmu.isBattTempHighIRQ())
       ESP_LOGI(TAG, "Battery low temperature.");
 
-    // wake up
+    // display on/off
     if (pmu.isPEKShortPressIRQ()) {
-      ESP_LOGI(TAG, "Power Button short pressed.");
+      cfg.screenon = !cfg.screenon;
-      AXP192_power(true);
     }
-    // enter sleep mode
+
+    // shutdown power
     if (pmu.isPEKLongtPressIRQ()) {
-      ESP_LOGI(TAG, "Power Button long pressed.");
+      AXP192_power(false); // switch off Lora, GPS, display
-      AXP192_power(false);
+      pmu.shutdown();
-      delay(20);
-      esp_sleep_enable_ext1_wakeup(GPIO_SEL_38, ESP_EXT1_WAKEUP_ALL_LOW);
-      esp_deep_sleep_start();
     }
 
     pmu.clearIRQ();
-    I2C_MUTEX_UNLOCK(); // release i2c bus access
+    I2C_MUTEX_UNLOCK();
-  } else
+  } // mutex
-    ESP_LOGI(TAG, "Unknown PMU event.");
+
+  // refresh stored voltage value
+  read_voltage();
 }
 
 void AXP192_power(bool on) {
-
   if (on) {
     pmu.setPowerOutPut(AXP192_LDO2, AXP202_ON);  // Lora on T-Beam V1.0
     pmu.setPowerOutPut(AXP192_LDO3, AXP202_ON);  // Gps on T-Beam V1.0
-    pmu.setPowerOutPut(AXP192_DCDC2, AXP202_ON);
+    pmu.setPowerOutPut(AXP192_DCDC1, AXP202_ON); // OLED on T-Beam v1.0
-    pmu.setPowerOutPut(AXP192_EXTEN, AXP202_ON);
-    pmu.setPowerOutPut(AXP192_DCDC1, AXP202_ON);
     // pmu.setChgLEDMode(AXP20X_LED_LOW_LEVEL);
     pmu.setChgLEDMode(AXP20X_LED_BLINK_1HZ);
   } else {
+    pmu.setChgLEDMode(AXP20X_LED_OFF);
     pmu.setPowerOutPut(AXP192_DCDC1, AXP202_OFF);
-    pmu.setPowerOutPut(AXP192_EXTEN, AXP202_OFF);
-    pmu.setPowerOutPut(AXP192_DCDC2, AXP202_OFF);
     pmu.setPowerOutPut(AXP192_LDO3, AXP202_OFF);
     pmu.setPowerOutPut(AXP192_LDO2, AXP202_OFF);
-    pmu.setChgLEDMode(AXP20X_LED_OFF);
   }
 }
 
-void AXP192_displaypower(void) {
+void AXP192_showstatus(void) {
+
+  if (!I2C_MUTEX_LOCK())
+    ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
+  else {
+
     if (pmu.isBatteryConnect())
       if (pmu.isChargeing())
         ESP_LOGI(TAG, "Battery charging, %.2fV @ %.0fmAh",
@@ -87,10 +89,13 @@ void AXP192_displaypower(void) {
       ESP_LOGI(TAG, "No Battery");
 
     if (pmu.isVBUSPlug())
-    ESP_LOGI(TAG, "USB present, %.2fV @ %.0fmA", pmu.getVbusVoltage() / 1000,
+      ESP_LOGI(TAG, "USB powered, %.0fmW",
-             pmu.getVbusCurrent());
+               pmu.getVbusVoltage() / 1000 * pmu.getVbusCurrent());
     else
       ESP_LOGI(TAG, "USB not present");
+
+    I2C_MUTEX_UNLOCK();
+  } // mutex
 }
 
 void AXP192_init(void) {
@@ -102,9 +107,10 @@ void AXP192_init(void) {
       ESP_LOGI(TAG, "AXP192 PMU initialization failed");
     else {
 
-      // switch power on
+      // configure AXP192
       pmu.setDCDC1Voltage(3300);              // for external OLED display
-      AXP192_power(true);
+      pmu.setTimeOutShutdown(false);          // no automatic shutdown
+      pmu.setTSmode(AXP_TS_PIN_MODE_DISABLE); // TS pin mode off to save power
 
       // switch ADCs on
       pmu.adc1Enable(AXP202_BATT_VOL_ADC1, true);
@@ -112,8 +118,8 @@ void AXP192_init(void) {
       pmu.adc1Enable(AXP202_VBUS_VOL_ADC1, true);
       pmu.adc1Enable(AXP202_VBUS_CUR_ADC1, true);
 
-      // set TS pin mode off to save power
+      // switch power rails on
-      pmu.setTSmode(AXP_TS_PIN_MODE_DISABLE);
+      AXP192_power(true);
 
       // I2C access of AXP202X library currently is not mutexable
       // so we better should disable AXP interrupts... ?
@@ -121,13 +127,13 @@ void AXP192_init(void) {
       pinMode(PMU_INT, INPUT_PULLUP);
       attachInterrupt(digitalPinToInterrupt(PMU_INT), PMUIRQ, FALLING);
       pmu.enableIRQ(AXP202_VBUS_REMOVED_IRQ | AXP202_VBUS_CONNECT_IRQ |
-                        AXP202_BATT_REMOVED_IRQ | AXP202_BATT_CONNECT_IRQ,
+                        AXP202_BATT_REMOVED_IRQ | AXP202_BATT_CONNECT_IRQ |
+                        AXP202_CHARGING_FINISHED_IRQ,
                     1);
       pmu.clearIRQ();
 #endif // PMU_INT
 
-      ESP_LOGI(TAG, "AXP192 PMU initialized, chip temp %.1f°C", pmu.getTemp());
+      ESP_LOGI(TAG, "AXP192 PMU initialized");
-      AXP192_displaypower();
     }
     I2C_MUTEX_UNLOCK(); // release i2c bus access
   } else
@@ -187,11 +193,15 @@ bool batt_sufficient() {
 }
 
 uint16_t read_voltage() {
-
   uint16_t voltage = 0;
 
 #ifdef HAS_PMU
+  if (!I2C_MUTEX_LOCK())
+    ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
+  else {
     voltage = pmu.isVBUSPlug() ? 0xffff : pmu.getBattVoltage();
+    I2C_MUTEX_UNLOCK();
+  }
 #else
 
 #ifdef BAT_MEASURE_ADC