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avr: Define timer1 timers and prevent their use as PWM at runtime 

Instead of commenting out the timer1 pwm definitions, detect them at
runtime.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2016-06-04 19:40:58 -04:00
parent 3eafc83458
commit 7531d0c678
1 changed files with 12 additions and 10 deletions
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22
src/avr/gpio.c
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@ -56,23 +56,23 @@ static const struct gpio_pwm_info pwm_regs[] PROGMEM = {
#if CONFIG_MACH_atmega168
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('D', 6), GP_8BIT },
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('D', 5), GP_8BIT },
// { &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 1), 0 },
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 2), 0 },
{ &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 1), 0 },
{ &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 2), 0 },
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('B', 3), GP_8BIT|GP_AFMT },
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 3), GP_8BIT|GP_AFMT },
#elif CONFIG_MACH_atmega644p
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 3), GP_8BIT },
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('B', 4), GP_8BIT },
// { &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('D', 5), 0 },
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('D', 4), 0 },
{ &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('D', 5), 0 },
{ &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('D', 4), 0 },
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('D', 7), GP_8BIT|GP_AFMT },
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 6), GP_8BIT|GP_AFMT },
#elif CONFIG_MACH_at90usb1286
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 7), GP_8BIT },
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('D', 0), GP_8BIT },
// { &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 5), 0 },
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 6), 0 },
// { &OCR1C, &TCCR1A, &TCCR1B, 1<<COM1C1, GPIO('B', 7), 0 },
{ &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 5), 0 },
{ &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 6), 0 },
{ &OCR1C, &TCCR1A, &TCCR1B, 1<<COM1C1, GPIO('B', 7), 0 },
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('B', 4), GP_8BIT|GP_AFMT },
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 1), GP_8BIT|GP_AFMT },
{ &OCR3A, &TCCR3A, &TCCR3B, 1<<COM3A1, GPIO('C', 6), 0 },
@ -81,9 +81,9 @@ static const struct gpio_pwm_info pwm_regs[] PROGMEM = {
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 7), GP_8BIT },
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('G', 5), GP_8BIT },
// { &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 5), 0 },
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 6), 0 },
// { &OCR1C, &TCCR1A, &TCCR1B, 1<<COM1C1, GPIO('B', 7), 0 },
{ &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 5), 0 },
{ &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 6), 0 },
{ &OCR1C, &TCCR1A, &TCCR1B, 1<<COM1C1, GPIO('B', 7), 0 },
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('B', 4), GP_8BIT|GP_AFMT },
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('H', 6), GP_8BIT|GP_AFMT },
{ &OCR3A, &TCCR3A, &TCCR3B, 1<<COM3A1, GPIO('E', 3), 0 },
@ -237,6 +237,8 @@ gpio_pwm_setup(uint8_t pin, uint32_t cycle_time, uint8_t val)
uint8_t bit = GPIO2BIT(pin);
struct gpio_pwm g = (struct gpio_pwm) {
(void*)READP(p->ocr), flags & GP_8BIT };
if (rega == &TCCR1A)
shutdown("Can not user timer1 for PWM; timer1 is used for timers");
// Setup PWM timer
uint8_t flag = irq_save();