mirror of https://github.com/ARMmbed/mbed-os.git
129 lines
3.1 KiB
C
129 lines
3.1 KiB
C
/* mbed Microcontroller Library
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* (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2017 All rights reserved
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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 "reset_reason_api.h"
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#ifdef DEVICE_RESET_REASON
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#include "TMPM066.h"
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#include <stdbool.h>
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#define MAXRSTREASON 6
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static uint8_t set_bit_count(uint32_t reg);
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static uint8_t bit_pos(uint32_t reg);
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static bool bit_status(uint32_t reg, uint8_t bit_no);
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static reset_reason_t reset_reason1[MAXRSTREASON] = {
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RESET_REASON_POWER_ON,
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RESET_REASON_UNKNOWN,
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RESET_REASON_UNKNOWN,
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RESET_REASON_PIN_RESET,
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RESET_REASON_UNKNOWN,
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RESET_REASON_BROWN_OUT
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};
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static reset_reason_t reset_reason2[MAXRSTREASON] = {
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RESET_REASON_SOFTWARE,
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RESET_REASON_UNKNOWN,
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RESET_REASON_WATCHDOG
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};
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void hal_reset_reason_clear(void)
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{
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TSB_AOREG->RSTFLG = 0x00;
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TSB_AOREG->RSTFLG1 = 0x00;
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}
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uint32_t hal_reset_reason_get_raw(void)
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{
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uint32_t ret = 0x00;
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ret = (((TSB_AOREG->RSTFLG1 & 0xFF) << 8) | (TSB_AOREG->RSTFLG & 0xFF));
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return ret;
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}
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reset_reason_t hal_reset_reason_get(void)
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{
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reset_reason_t ret;
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uint8_t NoOfSetBitCountReg1 = set_bit_count(TSB_AOREG->RSTFLG);
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uint8_t NoOfSetBitCountReg2 = set_bit_count(TSB_AOREG->RSTFLG1);
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if (NoOfSetBitCountReg1 != 0x00) {
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if (NoOfSetBitCountReg1 > 0x01) {
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if (bit_status(TSB_AOREG->RSTFLG, 0) && bit_status(TSB_AOREG->RSTFLG, 3)) {
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ret = RESET_REASON_POWER_ON;
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} else {
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ret = RESET_REASON_MULTIPLE;
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}
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} else {
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ret = reset_reason1[bit_pos(TSB_AOREG->RSTFLG)];
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}
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} else if (NoOfSetBitCountReg2 != 0x00) {
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if (NoOfSetBitCountReg2 > 0x01) {
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ret = RESET_REASON_MULTIPLE;
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} else {
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ret = reset_reason2[bit_pos(TSB_AOREG->RSTFLG1)];
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}
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} else {
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ret = RESET_REASON_UNKNOWN;
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}
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return ret;
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}
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static bool bit_status(uint32_t reg, uint8_t bit_no)
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{
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bool status = false;
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if (reg & (1 << bit_no)) {
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status = true;
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}
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return status;
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}
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static uint8_t set_bit_count(uint32_t reg)
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{
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uint8_t count = 0;
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int8_t index = 0;
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for (index = 0; index < (sizeof(uint32_t) * 8); index++) {
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if (reg & (1 << index)) {
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count++;
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if (count > 0x01) {
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break;
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}
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}
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}
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return count;
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}
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static uint8_t bit_pos(uint32_t reg)
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{
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uint8_t bit_no = 0;
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for (bit_no = 0; bit_no < (sizeof(uint32_t) * 8); bit_no++) {
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if (reg & (1 << bit_no)) {
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return bit_no;
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}
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}
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}
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#endif // DEVICE_RESET_REASON
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