diff options
Diffstat (limited to 'firmware/target/arm/sandisk/sansa-e200/button-e200.c')
| -rw-r--r-- | firmware/target/arm/sandisk/sansa-e200/button-e200.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/firmware/target/arm/sandisk/sansa-e200/button-e200.c b/firmware/target/arm/sandisk/sansa-e200/button-e200.c index f1d5981a18..6365a3f4d4 100644 --- a/firmware/target/arm/sandisk/sansa-e200/button-e200.c +++ b/firmware/target/arm/sandisk/sansa-e200/button-e200.c @@ -45,6 +45,8 @@ static bool hold_button_old = false; #endif /* BOOTLOADER */ static int int_btn = BUTTON_NONE; +void button_int(void); + void button_init_device(void) { /* Enable all buttons */ @@ -56,6 +58,11 @@ void button_init_device(void) GPIOG_ENABLE = 0x80; #ifndef BOOTLOADER + /* Mask these before performing init ... because init has possibly + occurred before */ + GPIOF_INT_EN &= ~0xff; + GPIOH_INT_EN &= ~0xc0; + /* Get current tick before enabling button interrupts */ last_wheel_tick = current_tick; last_wheel_post = current_tick; @@ -63,21 +70,18 @@ void button_init_device(void) GPIOH_ENABLE |= 0xc0; GPIOH_OUTPUT_EN &= ~0xc0; - GPIOF_INT_CLR = 0xff; - GPIOH_INT_CLR = 0xc0; - /* Read initial buttons */ - old_wheel_value = GPIOF_INPUT_VAL & 0xff; - GPIOF_INT_LEV = (GPIOF_INT_LEV & ~0xff) | (old_wheel_value ^ 0xff); - hold_button = (GPIOF_INPUT_VAL & 0x80) != 0; + button_int(); + GPIOF_INT_CLR = 0xff; /* Read initial wheel value (bit 6-7 of GPIOH) */ old_wheel_value = GPIOH_INPUT_VAL & 0xc0; GPIOH_INT_LEV = (GPIOH_INT_LEV & ~0xc0) | (old_wheel_value ^ 0xc0); + GPIOH_INT_CLR = 0xc0; /* Enable button interrupts */ - GPIOF_INT_EN = 0xff; - GPIOH_INT_EN = 0xc0; + GPIOF_INT_EN |= 0xff; + GPIOH_INT_EN |= 0xc0; CPU_INT_EN = HI_MASK; CPU_HI_INT_EN = GPIO_MASK; |