len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-08 20:55:17 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

hm60x: Use binary search in button driver.

Browse source 
Change-Id: I4abca66150c23ffb7cc27c4c5320b8117c27e228
This commit is contained in:
Andrew Ryabinin 2012-03-23 22:09:20 +04:00
parent 8361c1d901
commit 8187d8d5d1
1 changed files with 21 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

32
firmware/target/arm/rk27xx/hm60x/button-hm60x.c
View file

@ -31,16 +31,26 @@ void button_init_device(void) {
int button_read_device(void) {
int adc_val = adc_read(ADC_BUTTONS);
if (adc_val < 30) {
return BUTTON_UP | (GPIO_PCDR & POWEROFF_BUTTON);
} else if (adc_val < 250) {
return BUTTON_RIGHT | (GPIO_PCDR & POWEROFF_BUTTON);
} else if (adc_val < 380) {
return BUTTON_LEFT | (GPIO_PCDR & POWEROFF_BUTTON);
} else if (adc_val < 450) {
return BUTTON_DOWN | (GPIO_PCDR & POWEROFF_BUTTON);
} else if (adc_val < 560) {
return BUTTON_PLAY | (GPIO_PCDR & POWEROFF_BUTTON);
int gpio_btn = GPIO_PCDR & BUTTON_POWER;
if (adc_val < 380) { /* 0 - 379 */
if (adc_val < 250) { /* 0 - 249 */
if (adc_val < 30) { /* 0 - 29 */
return BUTTON_UP | gpio_btn;
} else { /* 30 - 249 */
return BUTTON_RIGHT | gpio_btn;
}
} else { /* 250 - 379 */
return BUTTON_LEFT | gpio_btn;
}
} else { /* > 380 */
if (adc_val < 460) { /* 380 - 459 */
return BUTTON_DOWN | gpio_btn;
} else { /* > 460 */
if (adc_val < 560) {
return BUTTON_SELECT | gpio_btn;
}
}
}
return (GPIO_PCDR & POWEROFF_BUTTON);
return gpio_btn;
}