micropython/ports/rp2/mphalport.h

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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"
#include "hardware/clocks.h"
#include "hardware/structs/systick.h"
#include "RP2040.h" // cmsis, for __WFI
#include "pendsv.h"
#define SYSTICK_MAX (0xffffff)
#define MICROPY_HW_USB_CDC_TX_TIMEOUT (500)
// Entering a critical section.
#define MICROPY_BEGIN_ATOMIC_SECTION() mp_thread_begin_atomic_section()
#define MICROPY_END_ATOMIC_SECTION(state) mp_thread_end_atomic_section(state)
#define MICROPY_PY_PENDSV_ENTER pendsv_suspend()
#define MICROPY_PY_PENDSV_EXIT pendsv_resume()
// Prevent the "lwIP task" from running when unsafe to do so.
#define MICROPY_PY_LWIP_ENTER lwip_lock_acquire();
#define MICROPY_PY_LWIP_REENTER lwip_lock_acquire();
#define MICROPY_PY_LWIP_EXIT lwip_lock_release();
extern int mp_interrupt_char;
extern ringbuf_t stdin_ringbuf;
uint32_t mp_thread_begin_atomic_section(void);
void mp_thread_end_atomic_section(uint32_t);
void mp_hal_set_interrupt_char(int c);
void mp_hal_time_ns_set_from_rtc(void);
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();
}
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"
#include "hardware/gpio.h"
#define MP_HAL_PIN_FMT "%u"
#define mp_hal_pin_obj_t uint
#define MP_HAL_PIN_MODE_INPUT (GPIO_IN)
#define MP_HAL_PIN_MODE_OUTPUT (GPIO_OUT)
#define MP_HAL_PIN_PULL_NONE (0)
#define MP_HAL_PIN_PULL_UP (1)
#define MP_HAL_PIN_PULL_DOWN (2)
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_dir(pin, GPIO_IN);
machine_pin_open_drain_mask &= ~(1 << pin);
gpio_set_function(pin, GPIO_FUNC_SIO);
}
static inline void mp_hal_pin_output(mp_hal_pin_obj_t pin) {
gpio_set_dir(pin, GPIO_OUT);
machine_pin_open_drain_mask &= ~(1 << pin);
gpio_set_function(pin, GPIO_FUNC_SIO);
}
static inline void mp_hal_pin_open_drain_with_value(mp_hal_pin_obj_t pin, int v) {
if (v) {
gpio_set_dir(pin, GPIO_IN);
gpio_put(pin, 0);
} else {
gpio_put(pin, 0);
gpio_set_dir(pin, GPIO_OUT);
}
machine_pin_open_drain_mask |= 1 << pin;
gpio_set_function(pin, GPIO_FUNC_SIO);
}
static inline void mp_hal_pin_open_drain(mp_hal_pin_obj_t pin) {
mp_hal_pin_open_drain_with_value(pin, 1);
}
static inline void mp_hal_pin_config(mp_hal_pin_obj_t pin, uint32_t mode, uint32_t pull, uint32_t alt) {
assert((mode == MP_HAL_PIN_MODE_INPUT || mode == MP_HAL_PIN_MODE_OUTPUT) && alt == 0);
gpio_set_dir(pin, mode);
gpio_set_pulls(pin, pull == MP_HAL_PIN_PULL_UP, pull == MP_HAL_PIN_PULL_DOWN);
}
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);
}
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);
}
enum mp_hal_pin_interrupt_trigger {
MP_HAL_PIN_TRIGGER_NONE,
MP_HAL_PIN_TRIGGER_LOW = GPIO_IRQ_LEVEL_LOW,
MP_HAL_PIN_TRIGGER_HIGH = GPIO_IRQ_LEVEL_HIGH,
MP_HAL_PIN_TRIGGER_FALL = GPIO_IRQ_EDGE_FALL,
MP_HAL_PIN_TRIGGER_RISE = GPIO_IRQ_EDGE_RISE,
};
void mp_hal_pin_interrupt(mp_hal_pin_obj_t pin, mp_obj_t handler, mp_uint_t trigger, bool hard);
mp_obj_base_t *mp_hal_get_spi_obj(mp_obj_t spi_in);
enum {
MP_HAL_MAC_WLAN0 = 0,
MP_HAL_MAC_BDADDR,
MP_HAL_MAC_ETH0,
};
void mp_hal_get_mac(int idx, uint8_t buf[6]);
void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest);
void mp_hal_generate_laa_mac(int idx, uint8_t buf[6]);
#endif // MICROPY_INCLUDED_RP2_MPHALPORT_H