hhkb: Integrate RN-42 support, remove hhkb_rn42

[qmk_firmware.git] / keyboard / hhkb_rn42 / rn42 / battery.c

diff --git a/keyboard/hhkb_rn42/rn42/battery.c b/keyboard/hhkb_rn42/rn42/battery.c
deleted file mode 100644 (file)
index 7e868c9..0000000
--- a/keyboard/hhkb_rn42/rn42/battery.c
+++ /dev/null
@@ -1,130 +0,0 @@
-#include <avr/io.h>
-#include <util/delay.h>
-#include "battery.h"
-
-
-/*
- * Battery
- */
-void battery_init(void)
-{
-    // blink 
-    battery_led(LED_ON);  _delay_ms(500);
-    battery_led(LED_OFF); _delay_ms(500);
-    battery_led(LED_ON);  _delay_ms(500);
-    battery_led(LED_OFF); _delay_ms(500);
-    // LED indicates charger status
-    battery_led(LED_CHARGER);
-
-    // ADC setting for voltage monitor
-    // Ref:2.56V band-gap, Input:ADC0(PF0), Prescale:128(16MHz/128=125KHz)
-    ADMUX = (1<<REFS1) | (1<<REFS0);
-    ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
-    // digital input buffer disable(24.9.5)
-    DIDR0 = (1<<ADC0D) | (1<<ADC4D) | (1<<ADC7D);
-    DIDR1 = (1<<AIN0D);
-    DIDR2 = (1<<ADC8D) | (1<<ADC9D) | (1<<ADC11D) | (1<<ADC12D) | (1<<ADC13D);
-
-    // ADC disable voltate divider(PF4)
-    DDRF  |=  (1<<4);
-    PORTF &= ~(1<<4);
-}
-
-// Indicator for battery
-void battery_led(battery_led_t val)
-{
-    if (val == LED_TOGGLE) {
-        // Toggle LED
-        DDRF  |=  (1<<5);
-        PINF  |=  (1<<5);
-    } else if (val == LED_ON) {
-        // On overriding charger status
-        DDRF  |=  (1<<5);
-        PORTF &= ~(1<<5);
-    } else if (val == LED_OFF) {
-        // Off overriding charger status
-        DDRF  |=  (1<<5);
-        PORTF |=  (1<<5);
-    } else {
-        // Display charger status
-        DDRF  &= ~(1<<5);
-        PORTF &= ~(1<<5);
-    }
-}
-
-bool battery_charging(void)
-{
-    if (!(USBSTA&(1<<VBUS))) return false;
-
-    // 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
-    uint8_t ddrf_prev  = DDRF;
-    uint8_t portf_prev = PORTF;
-
-    // Input with pullup
-    DDRF  &= ~(1<<5);
-    PORTF |=  (1<<5);
-    _delay_ms(1);
-    bool charging = PINF&(1<<5) ? false : true;
-
-    // restore last register status
-    DDRF  = (DDRF&~(1<<5))  | (ddrf_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;
-}
-
-// Returns voltage in mV
-uint16_t battery_voltage(void)
-{
-    // ADC disable voltate divider(PF4)
-    DDRF  |=  (1<<4);
-    PORTF |=  (1<<4);
-
-    volatile uint16_t bat;
-    ADCSRA |= (1<<ADEN);
-    _delay_ms(1);   // wait for charging S/H capacitance
-
-    ADCSRA |= (1<<ADSC);
-    while (ADCSRA & (1<<ADSC)) ;
-    bat = ADC;
-
-    ADCSRA &= ~(1<<ADEN);
-
-    // ADC disable voltate divider(PF4)
-    DDRF  |=  (1<<4);
-    PORTF &= ~(1<<4);
-
-    return (bat - BATTERY_ADC_OFFSET) * BATTERY_ADC_RESOLUTION;
-}
-
-static bool low_voltage(void) {
-    static bool low = false;
-    uint16_t v = battery_voltage();
-    if (v < BATTERY_VOLTAGE_LOW_LIMIT) {
-        low = true;
-    } else if (v > BATTERY_VOLTAGE_LOW_RECOVERY) {
-        low = false;
-    }
-    return low;
-}
-
-battery_status_t battery_status(void)
-{
-    if (USBSTA&(1<<VBUS)) {
-        /* powered */
-        return battery_charging() ? CHARGING : FULL_CHARGED;
-    } else {
-        /* not powered */
-        return low_voltage() ? LOW_VOLTAGE : DISCHARGING;
-    }
-}