afd0701bf7
This patch makes it so that UART(0) can by dynamically attached to and
detached from the REPL by using the uos.dupterm function. Since WebREPL
uses dupterm slot 0 the UART uses dupterm slot 1 (a slot which is newly
introduced by this patch). UART(0) must now be attached manually in
boot.py (or otherwise) and inisetup.py is changed to provide code to do
this. For example, to attach use:
import uos, machine
uart = machine.UART(0, 115200)
uos.dupterm(uart, 1)
and to detach use:
uos.dupterm(None, 1)
When attached, all incoming chars on UART(0) go straight to stdin so
uart.read() will always return None. Use sys.stdin.read() if it's needed
to read characters from the UART(0) while it's also used for the REPL (or
detach, read, then reattach). When detached the UART(0) can be used for
other purposes.
If there are no objects in any of the dupterm slots when the REPL is
started (on hard or soft reset) then UART(0) is automatically attached.
Without this, the only way to recover a board without a REPL would be to
completely erase and reflash (which would install the default boot.py which
attaches the REPL).
99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/ringbuf.h"
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#include "lib/utils/interrupt_char.h"
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#include "xtirq.h"
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void mp_keyboard_interrupt(void);
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struct _mp_print_t;
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// Structure for UART-only output via mp_printf()
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extern const struct _mp_print_t mp_debug_print;
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extern ringbuf_t stdin_ringbuf;
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// Call this after putting data to stdin_ringbuf
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void mp_hal_signal_input(void);
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// Call this when data is available in dupterm object
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void mp_hal_signal_dupterm_input(void);
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// This variable counts how many times the UART is attached to dupterm
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extern int uart_attached_to_dupterm;
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void mp_hal_init(void);
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void mp_hal_rtc_init(void);
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uint32_t mp_hal_ticks_us(void);
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__attribute__((always_inline)) static inline uint32_t mp_hal_ticks_cpu(void) {
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uint32_t ccount;
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__asm__ __volatile__("rsr %0,ccount":"=a" (ccount));
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return ccount;
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}
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void mp_hal_delay_us(uint32_t);
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void mp_hal_set_interrupt_char(int c);
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uint32_t mp_hal_get_cpu_freq(void);
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#define UART_TASK_ID 0
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#define DUPTERM_TASK_ID 1
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void uart_task_init();
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void dupterm_task_init();
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void ets_event_poll(void);
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#define ETS_POLL_WHILE(cond) { while (cond) ets_event_poll(); }
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// needed for machine.I2C
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#include "osapi.h"
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#define mp_hal_delay_us_fast(us) os_delay_us(us)
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#define mp_hal_quiet_timing_enter() disable_irq()
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#define mp_hal_quiet_timing_exit(irq_state) enable_irq(irq_state)
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// C-level pin HAL
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#include "etshal.h"
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#include "gpio.h"
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#include "modmachine.h"
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#define MP_HAL_PIN_FMT "%u"
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#define mp_hal_pin_obj_t uint32_t
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#define mp_hal_get_pin_obj(o) mp_obj_get_pin(o)
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#define mp_hal_pin_name(p) (p)
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void mp_hal_pin_input(mp_hal_pin_obj_t pin);
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void mp_hal_pin_output(mp_hal_pin_obj_t pin);
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void mp_hal_pin_open_drain(mp_hal_pin_obj_t pin);
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#define mp_hal_pin_od_low(p) do { \
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if ((p) == 16) { WRITE_PERI_REG(RTC_GPIO_ENABLE, (READ_PERI_REG(RTC_GPIO_ENABLE) & ~1) | 1); } \
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else { gpio_output_set(0, 1 << (p), 1 << (p), 0); } \
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} while (0)
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#define mp_hal_pin_od_high(p) do { \
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if ((p) == 16) { WRITE_PERI_REG(RTC_GPIO_ENABLE, (READ_PERI_REG(RTC_GPIO_ENABLE) & ~1)); } \
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else { gpio_output_set(0, 0, 0, 1 << (p)); /* set as input to avoid glitches */ } \
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} while (0)
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#define mp_hal_pin_read(p) pin_get(p)
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#define mp_hal_pin_write(p, v) pin_set((p), (v))
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void *ets_get_esf_buf_ctlblk(void);
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int ets_esf_free_bufs(int idx);
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