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rp2: Add new port to Raspberry Pi RP2 microcontroller.

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This commit adds a new port "rp2" which targets the new Raspberry Pi RP2040
microcontroller.

The build system uses pure cmake (with a small Makefile wrapper for
convenience).  The USB driver is TinyUSB, and there is a machine module
with most of the standard classes implemented.  Some examples are provided
in the examples/rp2/ directory.

Work done in collaboration with Graham Sanderson.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2021-01-21 00:34:08 +11:00
parent ef3ee7aa10
commit 469345e728
44 changed files with 5509 additions and 0 deletions
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113
ports/rp2/mphalport.h Normal file
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/*
* The MIT License (MIT)
*
* Copyright (c) 2020-2021 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef MICROPY_INCLUDED_RP2_MPHALPORT_H
#define MICROPY_INCLUDED_RP2_MPHALPORT_H
#include "py/mpconfig.h"
#include "py/ringbuf.h"
#include "pico/time.h"
extern int mp_interrupt_char;
extern ringbuf_t stdin_ringbuf;
void mp_hal_set_interrupt_char(int c);
static inline void mp_hal_delay_us(mp_uint_t us) {
sleep_us(us);
}
static inline void mp_hal_delay_us_fast(mp_uint_t us) {
busy_wait_us(us);
}
#define mp_hal_quiet_timing_enter() MICROPY_BEGIN_ATOMIC_SECTION()
#define mp_hal_quiet_timing_exit(irq_state) MICROPY_END_ATOMIC_SECTION(irq_state)
static inline mp_uint_t mp_hal_ticks_us(void) {
return time_us_32();
}
static inline mp_uint_t mp_hal_ticks_ms(void) {
return to_ms_since_boot(get_absolute_time());
}
static inline mp_uint_t mp_hal_ticks_cpu(void) {
// ticks_cpu() is defined as using the highest-resolution timing source
// in the system. This is usually a CPU clock, but doesn't have to be.
return time_us_32();
}
// C-level pin HAL
#include "py/obj.h"
#include "hardware/gpio.h"
#define MP_HAL_PIN_FMT "%u"
#define mp_hal_pin_obj_t uint
extern uint32_t machine_pin_open_drain_mask;
mp_hal_pin_obj_t mp_hal_get_pin_obj(mp_obj_t pin_in);
static inline unsigned int mp_hal_pin_name(mp_hal_pin_obj_t pin) {
return pin;
}
static inline void mp_hal_pin_input(mp_hal_pin_obj_t pin) {
gpio_set_function(pin, GPIO_FUNC_SIO);
gpio_set_dir(pin, GPIO_IN);
machine_pin_open_drain_mask &= ~(1 << pin);
}
static inline void mp_hal_pin_output(mp_hal_pin_obj_t pin) {
gpio_set_function(pin, GPIO_FUNC_SIO);
gpio_set_dir(pin, GPIO_OUT);
machine_pin_open_drain_mask &= ~(1 << pin);
}
static inline void mp_hal_pin_open_drain(mp_hal_pin_obj_t pin) {
gpio_set_function(pin, GPIO_FUNC_SIO);
gpio_set_dir(pin, GPIO_IN);
gpio_put(pin, 0);
machine_pin_open_drain_mask |= 1 << pin;
}
static inline int mp_hal_pin_read(mp_hal_pin_obj_t pin) {
return gpio_get(pin);
}
static inline void mp_hal_pin_write(mp_hal_pin_obj_t pin, int v) {
gpio_put(pin, v);
}
static inline void mp_hal_pin_od_low(mp_hal_pin_obj_t pin) {
gpio_set_dir(pin, GPIO_OUT);
}
static inline void mp_hal_pin_od_high(mp_hal_pin_obj_t pin) {
gpio_set_dir(pin, GPIO_IN);
}
#endif // MICROPY_INCLUDED_RP2_MPHALPORT_H