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Add support for watchdog on Silicon Labs devices

pull/10657/head
Steven Cooreman 2018-03-27 17:26:20 +02:00 committed by Filip Jagodzinski
parent 77c5007653
commit 295c79ab0a
2 changed files with 120 additions and 10 deletions
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100
targets/TARGET_Silicon_Labs/TARGET_EFM32/watchdog_api.c Normal file
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@ -0,0 +1,100 @@
/***************************************************************************//**
* @file watchdog_api.c
*******************************************************************************
* @section License
* <b>(C) Copyright 2018 Silicon Labs, http://www.silabs.com</b>
*******************************************************************************
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#include "device.h"
#include "watchdog_api.h"
#if DEVICE_WATCHDOG
#include "clocking.h"
#include "em_cmu.h"
#include "em_wdog.h"
watchdog_status_t hal_watchdog_init(const watchdog_config_t *config)
{
if (config == 0 || config->timeout_ms > 262145 || config->timeout_ms == 0) {
return WATCHDOG_STATUS_INVALID_ARGUMENT;
}
uint32_t timeout = config->timeout_ms;
if (timeout <= 9) {
timeout = 0;
} else {
timeout -= 2;
/* get bit position of highest bit set */
timeout = 31 - __CLZ(timeout);
/* need to go one over */
timeout += 1;
/* convert to wdog setting. if bit 4 is the highest, then the
* watchdog setting == 1. That means watchdog setting 0xF == 2^18 = 256k */
if (timeout > 18) {
return WATCHDOG_STATUS_INVALID_ARGUMENT;
}
timeout -= 3;
}
WDOG_Init_TypeDef wdog_init = WDOG_INIT_DEFAULT;
wdog_init.clkSel = wdogClkSelULFRCO;
wdog_init.em2Run = true;
wdog_init.em3Run = true;
wdog_init.perSel = timeout;
WDOGn_Init(DEFAULT_WDOG, &wdog_init);
return WATCHDOG_STATUS_OK;
}
void hal_watchdog_kick(void)
{
WDOGn_Feed(DEFAULT_WDOG);
}
watchdog_status_t hal_watchdog_stop(void)
{
WDOGn_Enable(DEFAULT_WDOG, false);
return WATCHDOG_STATUS_OK;
}
uint32_t hal_watchdog_get_reload_value(void)
{
uint32_t period = (DEFAULT_WDOG->CTRL & _WDOG_CTRL_PERSEL_MASK) >> _WDOG_CTRL_PERSEL_SHIFT;
if (period == 0) {
return 9;
} else {
period += 3;
return (1U << period) + 1;
}
}
watchdog_features_t hal_watchdog_get_platform_features(void)
{
watchdog_features_t feat = {
.max_timeout = 262145,
.update_config = true,
.disable_watchdog = true
};
return feat;
}
#endif /* DEVICE_WATCHDOG */

30
targets/targets.json
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@ -5814,7 +5814,8 @@
"USTICKER",
"FLASH",
"ITM",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -5890,7 +5891,8 @@
"STDIO_MESSAGES",
"USTICKER",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"device_name": "EFM32LG990F256",
@ -5968,7 +5970,8 @@
"STDIO_MESSAGES",
"USTICKER",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6041,7 +6044,8 @@
"SPISLAVE",
"SPI_ASYNCH",
"STDIO_MESSAGES",
"USTICKER"
"USTICKER",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6114,7 +6118,8 @@
"SPISLAVE",
"SPI_ASYNCH",
"STDIO_MESSAGES",
"USTICKER"
"USTICKER",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6190,7 +6195,8 @@
"STDIO_MESSAGES",
"USTICKER",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6289,7 +6295,8 @@
"STDIO_MESSAGES",
"USTICKER",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6359,7 +6366,8 @@
"STDIO_MESSAGES",
"USTICKER",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 5,
"config": {
@ -6437,7 +6445,8 @@
"USTICKER",
"TRNG",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 2,
"config": {
@ -6525,7 +6534,8 @@
"USTICKER",
"TRNG",
"FLASH",
"MPU"
"MPU",
"WATCHDOG"
],
"forced_reset_timeout": 5,
"config": {