11aa6ba456
Also improve pybsd, and make it save it's pin configuration. This is a necessary step towards supporting the CC3200 low power deep sleep (LPDS) mode.
137 lines
4.7 KiB
C
137 lines
4.7 KiB
C
/*
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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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#include <stdint.h>
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#include "py/mpconfig.h"
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#include MICROPY_HAL_H
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "inc/hw_types.h"
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#include "inc/hw_gpio.h"
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#include "inc/hw_ints.h"
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#include "inc/hw_memmap.h"
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#include "rom_map.h"
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#include "wdt.h"
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#include "prcm.h"
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#include "utils.h"
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#include "pybwdt.h"
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/******************************************************************************
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DECLARE CONSTANTS
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******************************************************************************/
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#define PYBWDT_MILLISECONDS_TO_TICKS(ms) ((80000000 / 1000) * (ms))
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#define PYBWDT_MIN_TIMEOUT_MS (500)
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/******************************************************************************
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DECLARE TYPES
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******************************************************************************/
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typedef struct {
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bool servers;
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bool simplelink;
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bool running;
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}pybwdt_data_t;
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/******************************************************************************
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DECLARE PRIVATE DATA
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******************************************************************************/
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static pybwdt_data_t pybwdt_data;
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/******************************************************************************
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DEFINE PUBLIC FUNCTIONS
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******************************************************************************/
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// must be called in main.c just after initializing the hal
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void pybwdt_init0 (void) {
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pybwdt_data.running = false;
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}
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void pybwdt_check_reset_cause (void) {
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// if we are recovering from a WDT reset, trigger
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// a hibernate cycle for a clean boot
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if (MAP_PRCMSysResetCauseGet() == PRCM_WDT_RESET) {
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HWREG(0x400F70B8) = 1;
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UtilsDelay(800000/5);
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HWREG(0x400F70B0) = 1;
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UtilsDelay(800000/5);
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HWREG(0x4402E16C) |= 0x2;
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UtilsDelay(800);
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HWREG(0x4402F024) &= 0xF7FFFFFF;
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MAP_PRCMHibernateWakeupSourceEnable(PRCM_HIB_SLOW_CLK_CTR);
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// set the sleep interval to 10ms
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MAP_PRCMHibernateIntervalSet(330);
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MAP_PRCMHibernateEnter();
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}
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}
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// minimum timeout value is 500ms
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pybwdt_ret_code_t pybwdt_enable (uint32_t timeout) {
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if (timeout >= PYBWDT_MIN_TIMEOUT_MS) {
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if (!pybwdt_data.running) {
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// Enable the WDT peripheral clock
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MAP_PRCMPeripheralClkEnable(PRCM_WDT, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
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// Unlock to be able to configure the registers
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MAP_WatchdogUnlock(WDT_BASE);
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// Make the WDT stall when the debugger stops on a breakpoint
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MAP_WatchdogStallEnable (WDT_BASE);
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// Set the watchdog timer reload value
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// the WDT trigger a system reset after the second timeout
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// so, divide by the 2 timeout value received
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MAP_WatchdogReloadSet(WDT_BASE, PYBWDT_MILLISECONDS_TO_TICKS(timeout / 2));
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// Start the timer. Once the timer is started, it cannot be disabled.
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MAP_WatchdogEnable(WDT_BASE);
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pybwdt_data.running = true;
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return E_PYBWDT_OK;
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}
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return E_PYBWDT_IS_RUNNING;
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}
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return E_PYBWDT_INVALID_TIMEOUT;
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}
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void pybwdt_kick (void) {
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// check that the servers and simplelink are running fine
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if (pybwdt_data.servers && pybwdt_data.simplelink && pybwdt_data.running) {
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pybwdt_data.servers = false;
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pybwdt_data.simplelink = false;
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MAP_WatchdogIntClear(WDT_BASE);
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}
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}
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void pybwdt_srv_alive (void) {
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pybwdt_data.servers = true;
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}
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void pybwdt_sl_alive (void) {
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pybwdt_data.simplelink = true;
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}
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