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