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Node / ReticulumProjects / RNode_Firmware.git / commits / 828623c


Commit 828623c70c21be0deedc7428e655c5ca37e7f814

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Parents : 23c580d
Author : Alligitor <8754766+alligitor@users.noreply.github.com>
Date : 2025-04-24T00:09:33Z

Fixed reading of battery voltage for Heltec V3.2. Comments from the code:

// there are three version of V3: V3, V3.1, and V3.2
// V3 and V3.1 have a pull up on pin_ctrl and are active low
// V3.2 has a transistor and active high
// put the pin input mode and read it. if it's high, we have V3 or V3.1
// other wise, it's a V3.2

Also, changed the min, max, float values for V3 boards. From what I can see, most are sold with
a battery like this: https://www.amazon.com/dp/B0D3LMQSGL
These batteries advertise a min voltage of 3 and max of 4. Float should be a tiny bit below Max.

Changes

1 files changed, 22 insertions(+), 5 deletions(-)

M Power.h +22 -5

Diff

diff --git a/Power.h b/Power.h
index d6af640..2f474f0 100644
--- a/Power.h
+++ b/Power.h
@@ -95,10 +95,10 @@
float bat_delay_v = 0;
float bat_state_change_v = 0;
#elif BOARD_MODEL == BOARD_HELTEC32_V3
- #define BAT_V_MIN 3.15
- #define BAT_V_MAX 4.3
- #define BAT_V_CHG 4.48
- #define BAT_V_FLOAT 4.33
+ #define BAT_V_MIN 3.05
+ #define BAT_V_MAX 4.0
+ #define BAT_V_CHG 4.1
+ #define BAT_V_FLOAT 3.95
#define BAT_SAMPLES 7
const uint8_t pin_vbat = 1;
const uint8_t pin_ctrl = 37;
@@ -348,8 +348,25 @@ bool init_pmu() {
pinMode(pin_vbat, INPUT);
return true;
#elif BOARD_MODEL == BOARD_HELTEC32_V3
+ // there are three version of V3: V3, V3.1, and V3.2
+ // V3 and V3.1 have a pull up on pin_ctrl and are active low
+ // V3.2 has a transistor and active high
+ // put the pin input mode and read it. if it's high, we have V3 or V3.1
+ // other wise, it's a V3.2
+ uint16_t pin_ctrl_value;
+ uint8_t pin_ctrl_active = LOW;
+ pinMode(pin_ctrl, INPUT);
+ pin_ctrl_value = digitalRead(pin_ctrl);
+ if(pin_ctrl_value == HIGH) {
+ // We have either a V3 or V3.1
+ pin_ctrl_active = LOW;
+ }
+ else {
+ // We have a V3.2
+ pin_ctrl_active = HIGH;
+ }
pinMode(pin_ctrl,OUTPUT);
- digitalWrite(pin_ctrl, LOW);
+ digitalWrite(pin_ctrl, pin_ctrl_active);
return true;
#elif BOARD_MODEL == BOARD_HELTEC_T114
pinMode(pin_ctrl,OUTPUT);


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