tmk
il y a 9 ans
2 fichiers modifiés avec 19 ajouts et 0 suppressions
+ 7
- 0
keyboard/hhkb_rn42/MEMO.txt
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| - deep sleep MCU and BT module(keyboard is not used for long time) | - deep sleep MCU and BT module(keyboard is not used for long time) | ||||
| - deep sleep MCU and turn off BT module(keyboard is not used and not connected) | - deep sleep MCU and turn off BT module(keyboard is not used and not connected) | ||||
| - Battery ADC; switching, high resistance | - Battery ADC; switching, high resistance | ||||
| - switching gnd end of divider with PF4 | |||||
| - high resistor 100K/1M? | |||||
| capacitor 10nF | |||||
| http://www.eevblog.com/forum/beginners/measuring-battery-voltage-without-consuming-current/ | |||||
| Improving: | Improving: | ||||
| - BT LED; connecting, linked, sleeping, deep sleeping | - BT LED; connecting, linked, sleeping, deep sleeping | ||||
| - Battry LED; blink(using timer?) | - Battry LED; blink(using timer?) | ||||
| - move rn42 to protocol directory when it becomes reusable stack | - move rn42 to protocol directory when it becomes reusable stack | ||||
| - LUFA sendchar should be buffered and serial_uart.c buffur size is too large(256). | - LUFA sendchar should be buffered and serial_uart.c buffur size is too large(256). | ||||
| - ADC resolution | |||||
| AVR120 | |||||
| AVR32138 | |||||
| Testing: | Testing: | ||||
| - Factroy reset doesn't work; need to **test again** 10K pull-up is too high? | - Factroy reset doesn't work; need to **test again** 10K pull-up is too high? |
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keyboard/hhkb_rn42/rn42/battery.c
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| ADMUX = (1<<REFS1) | (1<<REFS0); | ADMUX = (1<<REFS1) | (1<<REFS0); | ||||
| ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0); | ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0); | ||||
| ADCSRA |= (1<<ADEN); | ADCSRA |= (1<<ADEN); | ||||
| // ADC disable voltate divider(PF4) | |||||
| DDRF |= (1<<4); | |||||
| PORTF &= ~(1<<4); | |||||
| } | } | ||||
| // Indicator for battery | // Indicator for battery | ||||
| // Returns voltage in mV | // Returns voltage in mV | ||||
| uint16_t battery_voltage(void) | uint16_t battery_voltage(void) | ||||
| { | { | ||||
| // ADC disable voltate divider(PF4) | |||||
| DDRF |= (1<<4); | |||||
| PORTF |= (1<<4); | |||||
| volatile uint16_t bat; | volatile uint16_t bat; | ||||
| //ADCSRA |= (1<<ADEN); | //ADCSRA |= (1<<ADEN); | ||||
| //ADCSRA &= ~(1<<ADEN); | //ADCSRA &= ~(1<<ADEN); | ||||
| // ADC disable voltate divider(PF4) | |||||
| DDRF |= (1<<4); | |||||
| PORTF &= ~(1<<4); | |||||
| return (bat - BATTERY_ADC_OFFSET) * BATTERY_ADC_RESOLUTION; | return (bat - BATTERY_ADC_OFFSET) * BATTERY_ADC_RESOLUTION; | ||||
| } | } | ||||
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