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https://github.com/licsber/micropython.git
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c25e12d0dd
Zephyr restructured its includes in v2.0 and removed compatibility shims after two releases in commit 1342dadc365ee22199e51779185899ddf7478686. Updates include paths in MicroPython accordingly to fix build errors in the zephyr port. These changes are compatible with Zephyr v2.0 and later.
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/*
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* Copyright (c) 2016 Linaro
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <zephyr.h>
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#include <drivers/uart.h>
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#include <drivers/console/uart_console.h>
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#include <sys/printk.h>
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#include "zephyr_getchar.h"
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extern int mp_interrupt_char;
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void mp_keyboard_interrupt(void);
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static struct k_sem uart_sem;
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#define UART_BUFSIZE 256
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static uint8_t uart_ringbuf[UART_BUFSIZE];
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static uint8_t i_get, i_put;
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static int console_irq_input_hook(uint8_t ch)
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{
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int i_next = (i_put + 1) & (UART_BUFSIZE - 1);
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if (i_next == i_get) {
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printk("UART buffer overflow - char dropped\n");
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return 1;
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}
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if (ch == mp_interrupt_char) {
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mp_keyboard_interrupt();
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return 1;
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} else {
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uart_ringbuf[i_put] = ch;
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i_put = i_next;
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}
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//printk("%x\n", ch);
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k_sem_give(&uart_sem);
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k_yield();
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return 1;
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}
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uint8_t zephyr_getchar(void) {
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k_sem_take(&uart_sem, K_FOREVER);
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unsigned int key = irq_lock();
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uint8_t c = uart_ringbuf[i_get++];
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i_get &= UART_BUFSIZE - 1;
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irq_unlock(key);
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return c;
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}
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void zephyr_getchar_init(void) {
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k_sem_init(&uart_sem, 0, UINT_MAX);
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uart_console_in_debug_hook_install(console_irq_input_hook);
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// All NULLs because we're interested only in the callback above
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uart_register_input(NULL, NULL, NULL);
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}
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