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rp2/machine_bitstream: Implement the machine.bitstream driver.

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Timing error is ~20ns at 125MHz, and ~10ns at 250MHz.
This commit is contained in:
robert-hh
2021-09-15 18:16:05 +02:00
committed by Damien George
parent 7d7d29dbe2
commit b73d8b045a
5 changed files with 97 additions and 1 deletions
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16
ports/rp2/mphalport.h
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@@ -28,6 +28,10 @@
#include "py/mpconfig.h"
#include "py/ringbuf.h"
#include "pico/time.h"
#include "hardware/clocks.h"
#include "hardware/structs/systick.h"
#define SYSTICK_MAX (0xffffff)
extern int mp_interrupt_char;
extern ringbuf_t stdin_ringbuf;
@@ -59,6 +63,10 @@ static inline mp_uint_t mp_hal_ticks_cpu(void) {
return time_us_32();
}
static inline mp_uint_t mp_hal_get_cpu_freq(void) {
return clock_get_hz(clk_sys);
}
// C-level pin HAL
#include "py/obj.h"
@@ -110,4 +118,12 @@ static inline void mp_hal_pin_od_high(mp_hal_pin_obj_t pin) {
gpio_set_dir(pin, GPIO_IN);
}
static inline void mp_hal_pin_low(mp_hal_pin_obj_t pin) {
gpio_clr_mask(1 << pin);
}
static inline void mp_hal_pin_high(mp_hal_pin_obj_t pin) {
gpio_set_mask(1 << pin);
}
#endif // MICROPY_INCLUDED_RP2_MPHALPORT_H