2015-02-06 14:35:48 +00:00
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/*
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* This file is part of the Micro Python 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) 2015 Daniel Campora
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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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/******************************************************************************
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IMPORTS
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******************************************************************************/
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#include <stdio.h>
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#include <stdint.h>
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2015-02-13 15:04:53 +00:00
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#include <string.h>
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2015-02-06 14:35:48 +00:00
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#include "inc/hw_types.h"
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#include "inc/hw_ints.h"
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#include "inc/hw_nvic.h"
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#include "hw_memmap.h"
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2015-02-13 15:04:53 +00:00
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#include "py/mpstate.h"
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2015-02-06 14:35:48 +00:00
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#include MICROPY_HAL_H
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#include "rom_map.h"
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#include "interrupt.h"
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#include "systick.h"
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#include "prcm.h"
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#include "pin.h"
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#include "mpexception.h"
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2015-02-13 15:04:53 +00:00
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#include "telnet.h"
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#include "pybuart.h"
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2015-07-05 21:26:12 +01:00
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#include "utils.h"
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2015-02-06 14:35:48 +00:00
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#ifdef USE_FREERTOS
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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#endif
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/******************************************************************************
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DECLARE PRIVATE FUNCTIONS
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******************************************************************************/
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#ifndef USE_FREERTOS
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static void hal_TickInit (void);
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#endif
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/******************************************************************************
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2015-02-20 15:31:30 +00:00
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DECLARE LOCAL DATA
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2015-02-06 14:35:48 +00:00
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******************************************************************************/
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static volatile uint32_t HAL_tickCount;
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2015-02-20 15:31:30 +00:00
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/******************************************************************************
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DECLARE PUBLIC DATA
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******************************************************************************/
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struct _pyb_uart_obj_t *pyb_stdio_uart;
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2015-02-06 14:35:48 +00:00
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/******************************************************************************
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DECLARE IMPORTED DATA
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******************************************************************************/
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extern void (* const g_pfnVectors[256])(void);
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/******************************************************************************
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DEFINE PUBLIC FUNCTIONS
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******************************************************************************/
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2015-03-02 13:11:02 +00:00
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__attribute__ ((section (".boot")))
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2015-02-06 14:35:48 +00:00
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void HAL_SystemInit (void) {
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MAP_IntVTableBaseSet((unsigned long)&g_pfnVectors[0]);
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// in the case of a release image, these steps are already performed by
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// the bootloader so we can skip it and gain some code space
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2015-02-14 15:35:29 +00:00
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#ifdef DEBUG
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2015-02-06 14:35:48 +00:00
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MAP_IntMasterEnable();
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PRCMCC3200MCUInit();
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#endif
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#ifndef USE_FREERTOS
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hal_TickInit();
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#endif
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}
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void HAL_SystemDeInit (void) {
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}
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void HAL_IncrementTick(void) {
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HAL_tickCount++;
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}
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uint32_t HAL_GetTick(void) {
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return HAL_tickCount;
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}
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void HAL_Delay(uint32_t delay) {
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2015-07-05 21:26:12 +01:00
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// only if we are not within interrupt context
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if ((HAL_NVIC_INT_CTRL_REG & HAL_VECTACTIVE_MASK) == 0) {
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#ifdef USE_FREERTOS
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vTaskDelay (delay / portTICK_PERIOD_MS);
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#else
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uint32_t start = HAL_tickCount;
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// wraparound of tick is taken care of by 2's complement arithmetic.
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while (HAL_tickCount - start < delay) {
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// enter sleep mode, waiting for (at least) the SysTick interrupt.
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__WFI();
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}
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#endif
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} else {
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for (int ms = 1; ms <= delay; ms++) {
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UtilsDelay(UTILS_DELAY_US_TO_COUNT(ms * 1000));
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}
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2015-02-06 14:35:48 +00:00
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}
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}
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void mp_hal_set_interrupt_char (int c) {
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mpexception_set_interrupt_char (c);
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}
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2015-02-13 15:04:53 +00:00
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void mp_hal_stdout_tx_str(const char *str) {
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mp_hal_stdout_tx_strn(str, strlen(str));
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}
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2015-02-13 15:26:22 +00:00
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void mp_hal_stdout_tx_strn(const char *str, uint32_t len) {
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2015-02-20 15:31:30 +00:00
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// send stdout to UART
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if (pyb_stdio_uart != NULL) {
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uart_tx_strn(pyb_stdio_uart, str, len);
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2015-02-13 15:04:53 +00:00
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}
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// and also to telnet
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if (telnet_is_active()) {
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telnet_tx_strn(str, len);
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}
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}
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2015-02-13 15:26:22 +00:00
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void mp_hal_stdout_tx_strn_cooked(const char *str, uint32_t len) {
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2015-02-13 15:04:53 +00:00
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// send stdout to UART
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2015-02-20 15:31:30 +00:00
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if (pyb_stdio_uart != NULL) {
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uart_tx_strn_cooked(pyb_stdio_uart, str, len);
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2015-02-13 15:04:53 +00:00
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}
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// and also to telnet
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if (telnet_is_active()) {
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telnet_tx_strn_cooked(str, len);
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}
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}
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int mp_hal_stdin_rx_chr(void) {
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for ( ;; ) {
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if (telnet_rx_any()) {
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return telnet_rx_char();
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}
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2015-02-20 15:31:30 +00:00
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else if (pyb_stdio_uart != NULL && uart_rx_any(pyb_stdio_uart)) {
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return uart_rx_char(pyb_stdio_uart);
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2015-02-13 15:04:53 +00:00
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}
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HAL_Delay(1);
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}
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}
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2015-02-06 14:35:48 +00:00
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/******************************************************************************
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DEFINE PRIVATE FUNCTIONS
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******************************************************************************/
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#ifndef USE_FREERTOS
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static void hal_TickInit (void) {
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HAL_tickCount = 0;
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MAP_SysTickIntRegister(HAL_IncrementTick);
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MAP_IntEnable(FAULT_SYSTICK);
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MAP_SysTickIntEnable();
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MAP_SysTickPeriodSet(HAL_FCPU_HZ / HAL_SYSTICK_PERIOD_US);
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// Force a reload of the SysTick counter register
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HWREG(NVIC_ST_CURRENT) = 0;
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MAP_SysTickEnable();
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}
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#endif
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