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circuitpython/atmel-samd/samd21_pins.c
Scott Shawcroft e3f9ee839a Add frequency changing support to PWMOut. 
You can either set it once up front, or set variable_frequency on custruction to
indicate that the frequency must be able to change. This informs whether a timer
can be shared amongst pins.

This also adds persistent clock calibration on atmel-samd. Once the device has
synced its clock frequency over USB it will remember that config value until USB
is used again. This helps ensure the clock frequency is similar on and off USB.

Lastly, this also corrects time.sleep() when on USB by correcting the tick counter.
2017-01-30 15:02:01 -08:00

510 lines
10 KiB
C
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#include "shared-bindings/microcontroller/Pin.h"
#include "samd21_pins.h"
#define SERCOM(p_sercom, p_pad) \
{ \
.sercom = p_sercom, \
.pad = p_pad \
}
#define NO_SERCOM SERCOM(0, 0)
#define TCC(p_tcc, p_channel, p_wave_output) \
{ \
.tcc = p_tcc, \
.is_tc = false, \
.channel = p_channel, \
.wave_output = p_wave_output \
}
#define TC(p_tc, p_channel, p_wave_output) \
{ \
.tc = p_tc, \
.is_tc = true, \
.channel = p_channel, \
.wave_output = p_wave_output \
}
#define NO_TIMER TCC(0, 0, 0)
#define TOUCH(y_line) \
.has_touch = true, \
.touch_y_line = y_line,
#define NO_TOUCH \
.has_touch = false,
#define ADC_INPUT(input) \
.has_adc = true, \
.adc_input = input,
#define NO_ADC \
.has_adc = false,
// This macro is used to simplify pin definition in boards/<board>/pins.c
#define PIN(p_name, p_adc, p_touch, p_primary_timer, p_secondary_timer, \
p_primary_sercom, p_secondary_sercom) \
const mcu_pin_obj_t pin_## p_name = { \
{ &mcu_pin_type }, \
.name = MP_QSTR_ ## p_name, \
.pin = (PIN_## p_name), \
p_adc \
p_touch \
.primary_timer = p_primary_timer, \
.secondary_timer = p_secondary_timer, \
.sercom = {p_primary_sercom, p_secondary_sercom}, \
}
#define NO_ADC_INPUT (0)
void reset_pin(uint8_t pin) {
if (pin >= PORT_BITS) {
return;
}
struct system_pinmux_config config;
system_pinmux_get_config_defaults(&config);
config.powersave = true;
system_pinmux_pin_set_config(pin, &config);
}
// Pins in datasheet order.
// NOTE(tannewt): TC wave out 0 is commented out because the first channel is
// used to vary the 16 bit timer's frequency.
#ifdef PIN_PA00
PIN(PA00, NO_ADC, NO_TOUCH,
TCC(TCC2, 0, 0),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM1, 0));
#endif
#ifdef PIN_PA01
PIN(PA01, NO_ADC, NO_TOUCH,
TCC(TCC2, 1, 1),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM1, 1));
#endif
#ifdef PIN_PA02
PIN(PA02, ADC_INPUT(ADC_POSITIVE_INPUT_PIN0), TOUCH(0),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PA03
PIN(PA03, ADC_INPUT(ADC_POSITIVE_INPUT_PIN1), TOUCH(1),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PB04
PIN(PB04, ADC_INPUT(ADC_POSITIVE_INPUT_PIN12), TOUCH(10),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PB05
PIN(PB05, ADC_INPUT(ADC_POSITIVE_INPUT_PIN13), TOUCH(11),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PB06
PIN(PB06, ADC_INPUT(ADC_POSITIVE_INPUT_PIN14), TOUCH(12),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PB07
PIN(PB07, TOUCH(ADC_POSITIVE_INPUT_PIN15), TOUCH(13),
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PB08
PIN(PB08, ADC_INPUT(ADC_POSITIVE_INPUT_PIN2), TOUCH(14),
NO_TIMER, // TC(TC4, 0, 0),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM4, 0));
#endif
#ifdef PIN_PB09
PIN(PB09, ADC_INPUT(ADC_POSITIVE_INPUT_PIN3), TOUCH(15),
TC(TC4, 1, 1),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM4, 1));
#endif
#ifdef PIN_PA04
PIN(PA04, ADC_INPUT(ADC_POSITIVE_INPUT_PIN4), TOUCH(2),
TCC(TCC0, 0, 0),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM0, 0));
#endif
#ifdef PIN_PA05
PIN(PA05, ADC_INPUT(ADC_POSITIVE_INPUT_PIN5), TOUCH(3),
TCC(TCC0, 1, 1),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM0, 1));
#endif
#ifdef PIN_PA06
PIN(PA06, ADC_INPUT(ADC_POSITIVE_INPUT_PIN6), TOUCH(4),
TCC(TCC1, 0, 0),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM0, 2));
#endif
#ifdef PIN_PA07
PIN(PA07, ADC_INPUT(ADC_POSITIVE_INPUT_PIN7), TOUCH(5),
TCC(TCC1, 1, 1),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM0, 3));
#endif
#ifdef PIN_PA08
PIN(PA08, ADC_INPUT(ADC_POSITIVE_INPUT_PIN16), NO_TOUCH,
TCC(TCC0, 0, 0),
TCC(TCC1, 2, 2),
SERCOM(SERCOM0, 0),
SERCOM(SERCOM2, 0));
#endif
#ifdef PIN_PA09
PIN(PA09, ADC_INPUT(ADC_POSITIVE_INPUT_PIN17), NO_TOUCH,
TCC(TCC0, 1, 1),
TCC(TCC1, 3, 3),
SERCOM(SERCOM0, 1),
SERCOM(SERCOM2, 1));
#endif
#ifdef PIN_PA10
PIN(PA10, ADC_INPUT(ADC_POSITIVE_INPUT_PIN18), NO_TOUCH,
TCC(TCC1, 0, 0),
TCC(TCC0, 2, 2),
SERCOM(SERCOM0, 2),
SERCOM(SERCOM2, 2));
#endif
#ifdef PIN_PA11
PIN(PA11, ADC_INPUT(ADC_POSITIVE_INPUT_PIN19), NO_TOUCH,
TCC(TCC1, 1, 1),
TCC(TCC0, 3, 3),
SERCOM(SERCOM0, 3),
SERCOM(SERCOM2, 3));
#endif
#ifdef PIN_PB10
PIN(PB10, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC5, 0, 0),
TCC(TCC0, 0, 4),
NO_SERCOM,
SERCOM(SERCOM4, 2));
#endif
#ifdef PIN_PB11
PIN(PB11, NO_ADC, NO_TOUCH,
TC(TC5, 1, 1),
TCC(TCC0, 1, 5),
NO_SERCOM,
SERCOM(SERCOM4, 3));
#endif
#ifdef PIN_PB12
PIN(PB12, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC4, 0, 0),
TCC(TCC0, 2, 6),
SERCOM(SERCOM4, 0),
NO_SERCOM);
#endif
#ifdef PIN_PB13
PIN(PB13, NO_ADC, NO_TOUCH,
TC(TC4, 1, 1),
TCC(TCC0, 3, 7),
SERCOM(SERCOM4, 1),
NO_SERCOM);
#endif
#ifdef PIN_PB14
PIN(PB14, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC5, 0, 0),
NO_TIMER,
SERCOM(SERCOM4, 2),
NO_SERCOM);
#endif
// Second page.
#ifdef PIN_PB15
PIN(PB15, NO_ADC, NO_TOUCH,
TC(TC5, 1, 1),
NO_TIMER,
SERCOM(SERCOM4, 3),
NO_SERCOM);
#endif
#ifdef PIN_PA12
PIN(PA12, NO_ADC, NO_TOUCH,
TCC(TCC2, 0, 0),
TCC(TCC0, 2, 6),
SERCOM(SERCOM2, 0),
SERCOM(SERCOM4, 0));
#endif
#ifdef PIN_PA13
PIN(PA13, NO_ADC, NO_TOUCH,
TCC(TCC2, 1, 1),
TCC(TCC0, 3, 7),
SERCOM(SERCOM2, 1),
SERCOM(SERCOM4, 1));
#endif
#ifdef PIN_PA14
PIN(PA14, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC3, 0, 0),
TCC(TCC0, 0, 4),
SERCOM(SERCOM2, 2),
#ifdef SERCOM4
SERCOM(SERCOM4, 2)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PA15
PIN(PA15, NO_ADC, NO_TOUCH,
TC(TC3, 1, 1),
TCC(TCC0, 1, 5),
SERCOM(SERCOM2, 3),
#ifdef SERCOM4
SERCOM(SERCOM4, 3)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PA16
PIN(PA16, NO_ADC, NO_TOUCH,
TCC(TCC2, 0, 0),
TCC(TCC0, 2, 6),
SERCOM(SERCOM1, 0),
SERCOM(SERCOM3, 0));
#endif
#ifdef PIN_PA17
PIN(PA17, NO_ADC, NO_TOUCH,
TCC(TCC2, 1, 1),
TCC(TCC0, 3, 7),
SERCOM(SERCOM1, 1),
SERCOM(SERCOM3, 1));
#endif
#ifdef PIN_PA18
PIN(PA18, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC3, 0, 0),
TCC(TCC0, 2, 2),
SERCOM(SERCOM1, 2),
SERCOM(SERCOM3, 2));
#endif
#ifdef PIN_PA19
PIN(PA19, NO_ADC, NO_TOUCH,
TC(TC3, 1, 1),
TCC(TCC0, 3, 3),
SERCOM(SERCOM1, 3),
SERCOM(SERCOM3, 3));
#endif
#ifdef PIN_PB16
PIN(PB16, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC6_INSTANCE_
NO_TIMER, // TC(TC6, 0, 0),
#else
NO_TIMER,
#endif
TCC(TCC0, 0, 4),
SERCOM(SERCOM5, 0),
NO_SERCOM);
#endif
#ifdef PIN_PB17
PIN(PB17, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC6_INSTANCE_
TC(TC6, 1, 1),
#else
NO_TIMER,
#endif
TCC(TCC0, 1, 5),
SERCOM(SERCOM5, 1),
NO_SERCOM);
#endif
#ifdef PIN_PA20
PIN(PA20, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC7_INSTANCE_
NO_TIMER, // TC(TC7, 0, 0),
#else
NO_TIMER,
#endif
TCC(TCC0, 2, 6),
SERCOM(SERCOM5, 2),
SERCOM(SERCOM3, 2));
#endif
#ifdef PIN_PA21
PIN(PA21, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC7_INSTANCE_
TC(TC7, 1, 1),
#else
NO_TIMER,
#endif
TCC(TCC0, 3, 7),
SERCOM(SERCOM5, 3),
SERCOM(SERCOM3, 3));
#endif
#ifdef PIN_PA22
PIN(PA22, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC4, 0, 0),
TCC(TCC0, 0, 4),
SERCOM(SERCOM3, 0),
#ifdef SERCOM5
SERCOM(SERCOM5, 0)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PA23
PIN(PA23, NO_ADC, NO_TOUCH,
TC(TC4, 1, 1),
TCC(TCC0, 1, 5),
SERCOM(SERCOM3, 1),
#ifdef SERCOM5
SERCOM(SERCOM5, 1)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PA24
PIN(PA24, NO_ADC, NO_TOUCH,
NO_TIMER, // TC(TC5, 0, 0),
TCC(TCC0, 2, 2),
SERCOM(SERCOM3, 2),
#ifdef SERCOM5
SERCOM(SERCOM5, 2)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PA25
PIN(PA25, NO_ADC, NO_TOUCH,
TC(TC5, 1, 1),
TCC(TCC1, 3, 3),
SERCOM(SERCOM3, 3),
#ifdef SERCOM5
SERCOM(SERCOM5, 3)
#else
NO_SERCOM
#endif
);
#endif
#ifdef PIN_PB22
PIN(PB22, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC7_INSTANCE_
NO_TIMER, // TC(TC7, 0, 0),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 2));
#endif
#ifdef PIN_PB23
PIN(PB23, NO_ADC, NO_TOUCH,
#ifdef _SAMD21_TC7_INSTANCE_
TC(TC7, 1, 1),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 3));
#endif
#ifdef PIN_PA27
PIN(PA27, NO_ADC, NO_TOUCH,
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PA28
PIN(PA28, NO_ADC, NO_TOUCH,
NO_TIMER,
NO_TIMER,
NO_SERCOM,
NO_SERCOM);
#endif
#ifdef PIN_PA30
PIN(PA30, NO_ADC, NO_TOUCH,
TCC(TCC1, 0, 0),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM1, 2));
#endif
#ifdef PIN_PA31
PIN(PA31, NO_ADC, NO_TOUCH,
TCC(TCC1, 1, 1),
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM1, 3));
#endif
#ifdef PIN_PB30
PIN(PB30, NO_ADC, NO_TOUCH,
TCC(TCC0, 0, 0),
TCC(TCC1, 2, 2),
NO_SERCOM,
SERCOM(SERCOM5, 0));
#endif
#ifdef PIN_PB31
PIN(PB31, NO_ADC, NO_TOUCH,
TCC(TCC0, 1, 1),
TCC(TCC1, 3, 3),
NO_SERCOM,
SERCOM(SERCOM5, 1));
#endif
#ifdef PIN_PB00
PIN(PB00, ADC_INPUT(ADC_POSITIVE_INPUT_PIN8), TOUCH(6),
#ifdef _SAMD21_TC7_INSTANCE_
NO_TIMER, // TC(TC7, 0, 0),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 2));
#endif
#ifdef PIN_PB01
PIN(PB01, ADC_INPUT(ADC_POSITIVE_INPUT_PIN9), TOUCH(7),
#ifdef _SAMD21_TC7_INSTANCE_
TC(TC7, 1, 1),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 3));
#endif
#ifdef PIN_PB02
PIN(PB02, ADC_INPUT(ADC_POSITIVE_INPUT_PIN10), TOUCH(8),
#ifdef _SAMD21_TC6_INSTANCE_
NO_TIMER, // TC(TC6, 0, 0),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 0));
#endif
#ifdef PIN_PB03
PIN(PB03, ADC_INPUT(ADC_POSITIVE_INPUT_PIN11), TOUCH(9),
#ifdef _SAMD21_TC6_INSTANCE_
TC(TC6, 1, 1),
#else
NO_TIMER,
#endif
NO_TIMER,
NO_SERCOM,
SERCOM(SERCOM5, 1));
#endif
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