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authortmk <hasu@tmk-kbd.com>2014-12-02 22:47:59 +0900
committertmk <hasu@tmk-kbd.com>2015-01-15 17:08:48 +0900
commit825be9d121a9c698bf60bbdc384f2eeaf66f60d0 (patch)
tree57408c614d911d0862b5d10b838beab5243a2389 /keyboard/hhkb_rn42/rn42/battery.c
parentde29f986a73860abfa930cd1b91cec60b02ee7a7 (diff)
Disable input buffer for ADC
Diffstat (limited to 'keyboard/hhkb_rn42/rn42/battery.c')
-rw-r--r--keyboard/hhkb_rn42/rn42/battery.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/keyboard/hhkb_rn42/rn42/battery.c b/keyboard/hhkb_rn42/rn42/battery.c
index 0320e1baf1..720d63bebb 100644
--- a/keyboard/hhkb_rn42/rn42/battery.c
+++ b/keyboard/hhkb_rn42/rn42/battery.c
@@ -21,6 +21,10 @@ void battery_init(void)
ADMUX = (1<<REFS1) | (1<<REFS0);
ADCSRA = (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
ADCSRA |= (1<<ADEN);
+ // digital input buffer disable(24.9.5)
+ DIDR0 = (1<<ADC0D) | (1<<ADC4D) | (1<<ADC5D) | (1<<ADC7D);
+ DIDR1 = (1<<AIN0D);
+ DIDR2 = (1<<ADC8D) | (1<<ADC9D) | (1<<ADC11D) | (1<<ADC12D) | (1<<ADC13D);
// ADC disable voltate divider(PF4)
DDRF |= (1<<4);