Mercurial > public > ostc4
changeset 433:aa286a4926c2 Improve_BatteryGasGauge
Detect startup after power off:
Introduced a variable in memory area which is not initialized during startup. In case of a start from power off the memory cell will be initialized (persistant as long as RTE is powered) and charge counter is set to 0 signaling the user to do a complete charge to calibrate the counter.
| author | ideenmodellierer |
|---|---|
| date | Sun, 23 Feb 2020 21:09:56 +0100 |
| parents | 2b4440f75434 |
| children | f68f2c4d71c7 |
| files | Small_CPU/CPU2-RTE.ld Small_CPU/Src/baseCPU2.c Small_CPU/Src/batteryGasGauge.c |
| diffstat | 3 files changed, 22 insertions(+), 6 deletions(-) [+] |
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--- a/Small_CPU/CPU2-RTE.ld Tue Feb 18 12:41:45 2020 +0100 +++ b/Small_CPU/CPU2-RTE.ld Sun Feb 23 21:09:56 2020 +0100 @@ -181,7 +181,15 @@ *(.heap*) __HeapLimit = .; } > RAM - + + /* .noinit section contains data which will not be change during startup */ + .noinit : + { + . = ALIGN(4); + *(.noinit*) + _end = . ; + } > RAM + /* .stack_dummy section doesn't contains any symbols. It is only * used for linker to calculate size of stack sections, and assign * values to stack symbols later */
--- a/Small_CPU/Src/baseCPU2.c Tue Feb 18 12:41:45 2020 +0100 +++ b/Small_CPU/Src/baseCPU2.c Sun Feb 23 21:09:56 2020 +0100 @@ -151,6 +151,8 @@ #include "stm32f4xx_hal.h" #include <stdio.h> +uint8_t coldstart __attribute__((section (".noinit"))); + uint8_t hasExternalClock(void) { if ((TM_OTP_Read(0, 0) > 0) && (TM_OTP_Read(0, 0) < 0xFF)) return 1; @@ -181,7 +183,9 @@ /* for safety reasons and coming functions */ .magic[0] = FIRMWARE_MAGIC_FIRST, .magic[1] = FIRMWARE_MAGIC_SECOND, .magic[2] = FIRMWARE_MAGIC_CPU2_RTE, /* the magic byte for RTE */ - .magic[3] = FIRMWARE_MAGIC_END }; + .magic[3] = FIRMWARE_MAGIC_END +}; + uint8_t firmwareVersionHigh(void) { return cpu2_FirmwareData.versionFirst; @@ -339,7 +343,11 @@ init_battery_gas_gauge(); HAL_Delay(10); battery_gas_gauge_get_data(); -// battery_gas_gauge_set(0); + if(coldstart != 0xA5) + { + coldstart = 0xA5; + battery_gas_gauge_set(0); + } global.lifeData.battery_voltage = get_voltage(); global.lifeData.battery_charge = get_charge();
--- a/Small_CPU/Src/batteryGasGauge.c Tue Feb 18 12:41:45 2020 +0100 +++ b/Small_CPU/Src/batteryGasGauge.c Sun Feb 23 21:09:56 2020 +0100 @@ -64,7 +64,7 @@ buffer[0] = 0x01; // F8 = 11111000: - // Vbat 3.0V (11) + // ADC auto mode (11) // Prescale M = 128 (111) // AL/CC pin disable (0) // Shutdown (0) @@ -127,8 +127,8 @@ // max/full: 0.085 mAh * 1 * 65535 = 5570 mAh battery_f_charge_percent_local = (float)(bufferReceive[2] * 256); battery_f_charge_percent_local += (float)(bufferReceive[3]); - battery_f_charge_percent_local -= BGG_BATTERY_OFFSET; - battery_f_charge_percent_local /= BGG_BATTERY_DIVIDER; + battery_f_charge_percent_local -= BGG_BATTERY_OFFSET; /* Because of the prescalar 128 the counter assumes a max value of 5570mAh => normalize to 3350mAh*/ + battery_f_charge_percent_local /= BGG_BATTERY_DIVIDER; /* transform to percentage */ if(battery_f_charge_percent_local < 0) battery_f_charge_percent_local = 0;