tmk
9 years ago
3 changed files with 52 additions and 9 deletions
+ 9
- 4
keyboard/hhkb_rn42/rn42/battery.c
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| { | { | ||||
| if (!(USBSTA&(1<<VBUS))) return false; | if (!(USBSTA&(1<<VBUS))) return false; | ||||
| // MCP73831:STAT | |||||
| // HiZ: Shutdown/No Battery | |||||
| // Low: Charging | |||||
| // Hi: Charged | |||||
| // Charger Status: | |||||
| // MCP73831 MCP73832 LTC4054 Status | |||||
| // Hi-Z Hi-Z Hi-Z Shutdown/No Battery | |||||
| // Low Low Low Charging | |||||
| // Hi Hi-Z Hi-Z Charged | |||||
| // preserve last register status | // preserve last register status | ||||
| uint8_t ddrf_prev = DDRF; | uint8_t ddrf_prev = DDRF; | ||||
| DDRF = (DDRF&~(1<<5)) | (ddrf_prev&(1<<5)); | DDRF = (DDRF&~(1<<5)) | (ddrf_prev&(1<<5)); | ||||
| PORTF = (PORTF&~(1<<5)) | (portf_prev&(1<<5)); | PORTF = (PORTF&~(1<<5)) | (portf_prev&(1<<5)); | ||||
| // TODO: With MCP73831 this can not get stable status when charging. | |||||
| // LED is powered from PSEL line(USB or Lipo) | |||||
| // due to weak low output of STAT pin? | |||||
| // due to pull-up'd via resitor and LED? | |||||
| return charging; | return charging; | ||||
| } | } | ||||
+ 1
- 0
keyboard/hhkb_rn42/rn42/battery.h
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| CHARGING, | CHARGING, | ||||
| DISCHARGING, | DISCHARGING, | ||||
| LOW_VOLTAGE, | LOW_VOLTAGE, | ||||
| UNKNOWN, | |||||
| } battery_status_t; | } battery_status_t; | ||||
| typedef enum { | typedef enum { |
+ 42
- 5
keyboard/hhkb_rn42/rn42/rn42_task.c
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| } | } | ||||
| } | } | ||||
| /* Low voltage alert */ | |||||
| if (battery_status() == LOW_VOLTAGE) { | |||||
| battery_led(LED_ON); | |||||
| } else { | |||||
| battery_led(LED_CHARGER); | |||||
| static uint16_t prev_timer = 0; | |||||
| static uint8_t sec = 0; | |||||
| // NOTE: not exact 1 sec | |||||
| if (timer_elapsed(prev_timer) > 1000) { | |||||
| /* every second */ | |||||
| prev_timer = timer_read(); | |||||
| /* Low voltage alert */ | |||||
| uint8_t bs = battery_status(); | |||||
| if (bs == LOW_VOLTAGE) { | |||||
| battery_led(LED_ON); | |||||
| } else { | |||||
| battery_led(LED_CHARGER); | |||||
| } | |||||
| static uint8_t prev_status = UNKNOWN; | |||||
| if (bs != prev_status) { | |||||
| prev_status = bs; | |||||
| switch (bs) { | |||||
| case FULL_CHARGED: xprintf("FULL_CHARGED\n"); break; | |||||
| case CHARGING: xprintf("CHARGING\n"); break; | |||||
| case DISCHARGING: xprintf("DISCHARGING\n"); break; | |||||
| case LOW_VOLTAGE: xprintf("LOW_VOLTAGE\n"); break; | |||||
| default: xprintf("UNKNOWN STATUS\n"); break; | |||||
| }; | |||||
| } | |||||
| /* every minute */ | |||||
| if (sec == 0) { | |||||
| uint32_t t = timer_read32()/1000; | |||||
| uint16_t v = battery_voltage(); | |||||
| uint8_t h = t/3600; | |||||
| uint8_t m = t%3600/60; | |||||
| uint8_t s = t%60; | |||||
| xprintf("%02u:%02u:%02u\t%umV\n", h, m, s, v); | |||||
| /* TODO: xprintf doesn't work for this. | |||||
| xprintf("%02u:%02u:%02u\t%umV\n", (t/3600), (t%3600/60), (t%60), v); | |||||
| */ | |||||
| } | |||||
| sec++; sec = sec%60; | |||||
| } | } | ||||
| /* Connection monitor */ | /* Connection monitor */ | ||||
| if (rn42_linked()) { | if (rn42_linked()) { | ||||
| status_led(true); | status_led(true); |
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