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samd: button must hold for 5 seconds now

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This commit is contained in:
Ryan 2018-10-03 16:04:32 -07:00
parent 84b6818982
commit b91a975d56
1 changed files with 71 additions and 5 deletions
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72
src/platforms/jeff/platform.c
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@ -37,7 +37,8 @@ static struct gclk_hw clock = {
.gclk0 = SRC_DFLL48M, .gclk0 = SRC_DFLL48M,
.gclk1 = SRC_OSC8M, .gclk1 = SRC_OSC8M,
.gclk1_div = 30, /* divide clock for ADC */ .gclk1_div = 30, /* divide clock for ADC */
.gclk2 = SRC_DFLL48M, .gclk2 = SRC_OSC8M,
.gclk2_div = 100, /* divide clock for TC */
.gclk3 = SRC_DFLL48M, .gclk3 = SRC_DFLL48M,
.gclk4 = SRC_DFLL48M, .gclk4 = SRC_DFLL48M,
.gclk5 = SRC_DFLL48M, .gclk5 = SRC_DFLL48M,
@ -50,6 +51,9 @@ extern void trace_tick(void);
uint8_t running_status; uint8_t running_status;
static volatile uint32_t time_ms; static volatile uint32_t time_ms;
uint8_t button_pressed;
//static volatile uint32_t button_counter;
void sys_tick_handler(void) void sys_tick_handler(void)
{ {
if(running_status) if(running_status)
@ -106,8 +110,38 @@ static void adc_init(void)
#define EIC_CONFIG1 0x4000181C #define EIC_CONFIG1 0x4000181C
#define EIC_INTENSET 0x4000180C #define EIC_INTENSET 0x4000180C
#define TC3 0x42002C00
static void counter_init(void)
{
/* enable bus and clock */
INSERTBF(PM_APBCMASK_TC3, 1, PM->apbcmask);
set_periph_clk(GCLK2, GCLK_ID_TC3);
periph_clk_en(GCLK_ID_TC3, 1);
/* reset */
*((uint16_t*)TC3) = 1;
/* set CTRLA.MODE (default 16-bit) */
/* set CTRLA.WAVEGEN */
/* set CTRLA.PRESCALER and CTRLA.PRESYNC */
*((uint16_t*)TC3) = (7<<8); //| (1<<12);
/* set CC0 (approx. 5 seconds delay) */
*((uint16_t*)(0x42002C18)) = 1000;
/* enable MC0 interrupt */
*((uint8_t*)(0x42002C0D)) = (1<<4);
nvic_enable_irq(NVIC_TC3_IRQ);
/* set CTRLBSET.ONESHOT */
/* enable the TC */
}
static void button_init(void) static void button_init(void)
{ {
#if 1
gpio_config_special(BUTTON_PORT, BUTTON_PIN, SOC_GPIO_PERIPH_A); gpio_config_special(BUTTON_PORT, BUTTON_PIN, SOC_GPIO_PERIPH_A);
INSERTBF(PM_APBAMASK_EIC, 1, PM->apbamask); INSERTBF(PM_APBAMASK_EIC, 1, PM->apbamask);
@ -115,9 +149,9 @@ static void button_init(void)
set_periph_clk(GCLK0, GCLK_ID_EIC); set_periph_clk(GCLK0, GCLK_ID_EIC);
periph_clk_en(GCLK_ID_EIC, 1); periph_clk_en(GCLK_ID_EIC, 1);
/* configure falling edge */ /* configure r/f edge, enable filtering */
//EIC->evctrl = (1<<15); //EIC->evctrl = (1<<15);
*((uint32_t*)EIC_CONFIG1) = (2<<28); *((uint32_t*)EIC_CONFIG1) = ((2+8)<<28);
/* enable the IEC */ /* enable the IEC */
*((uint8_t*)EIC) = (1<<1); *((uint8_t*)EIC) = (1<<1);
@ -125,6 +159,11 @@ static void button_init(void)
/* enable interrupts */ /* enable interrupts */
*((uint32_t*)EIC_INTENSET) = (1<<15); *((uint32_t*)EIC_INTENSET) = (1<<15);
nvic_enable_irq(NVIC_EIC_IRQ); nvic_enable_irq(NVIC_EIC_IRQ);
//button_counter = 0;
#else
gpio_config_input(BUTTON_PORT, BUTTON_PIN, 0);
#endif
} }
void platform_init(void) void platform_init(void)
@ -162,6 +201,7 @@ void platform_init(void)
usbuart_init(); usbuart_init();
cdcacm_init(); cdcacm_init();
adc_init(); adc_init();
counter_init();
button_init(); button_init();
} }
@ -231,6 +271,32 @@ void platform_request_boot(void)
void eic_isr(void) void eic_isr(void)
{ {
if (!button_pressed){
/* set to rising-edge detection */
*((uint32_t*)EIC_CONFIG1) = ((1+8)<<28);
/* enable counter */
*((uint16_t*)TC3) |= 2;
//*((uint8_t*)(0x42002C05)) = (1<<6);
button_pressed = 1;
} else {
/* set to falling-edge detection */
*((uint32_t*)EIC_CONFIG1) = ((2+8)<<28);
/* disable and reset counter */
*((uint16_t*)TC3) &= ~2;
*((uint16_t*)(0x42002C10)) = 0;
button_pressed = 0;
}
/* clear the interrupt */
*((uint32_t*)0x40001810) = (1<<15);
}
void tc3_isr(void)
{
if ((*((uint8_t*)(0x42002C0E)) & 16))
scb_reset_system(); scb_reset_system();
} }