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/**************************************************************************//**
* @file system_BAT32G137.c
* @brief CMSIS Cortex-M0+ Device Peripheral Access Layer Source File for
* Device BAT32G137
* @version V1.00
* @date 2019/04/24
******************************************************************************/
/*
* Copyright (c) 2009-2018 Arm Limited. All rights reserved.
*
* 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
*
* [url]www.apache.org/licenses/LICENSE-2.0[/url]
*
* 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 <stdint.h>
#include "BAT32G133.h"
/** @addtogroup Configuration_of_User_Option_Byte
* @{
*/
typedef enum {
HOCO_FREQ_64MHZ = 0xF0, /*!< fHOCO = 64MHz, fIH = 64MHz */
HOCO_FREQ_48MHZ = 0xE8, /*!< fHOCO = 48MHz, fIH = 48MHz */
HOCO_FREQ_32MHZ = 0xF1, /*!< fHOCO = 64MHz, fIH = 32MHz */
HOCO_FREQ_24MHZ = 0xE9, /*!< fHOCO = 48MHz, fIH = 24MHz */
HOCO_FREQ_16MHZ = 0xF2, /*!< fHOCO = 64MHz, fIH = 16MHz */
HOCO_FREQ_12MHZ = 0xEA, /*!< fHOCO = 48MHz, fIH = 12MHz */
HOCO_FREQ_8MHZ = 0xE0, /*!< fHOCO = 8MHz, fIH = 8MHz */
HOCO_FREQ_6MHZ = 0xEB, /*!< fHOCO = 48MHz, fIH = 6MHz */
HOCO_FREQ_4MHZ = 0xE1, /*!< fHOCO = 8MHz, fIH = 4MHz */
HOCO_FREQ_3MHZ = 0xEC, /*!< fHOCO = 48MHz, fIH = 3MHz */
HOCO_FREQ_2MHZ = 0xE2, /*!< fHOCO = 8MHz, fIH = 2MHz */
HOCO_FREQ_1MHZ = 0xE3 /*!< fHOCO = 8MHz, fIH = 1MHz */
} hoco_freq_t;
/*----------------------------------------------------------------------------
User Option Byte
*----------------------------------------------------------------------------*/
/* ToDo: add here your necessary defines for device initialization
following is an example for different system frequencies */
//-------- <<< Use Configuration Wizard in Context Menu >>> ------------------
const uint8_t user_opt_data[4] __attribute__((used)) __attribute__((section(".ARM.__AT_0x000000C0"))) =
{
/**
* @brief WDT Control BYTE
* Please refer to the user manual for details.
* 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
* --------|---------|---------|-------|-------|-------|-------|----------
* WDTINT | WINDOW1 | WINDOW0 | WDTON | WDCS2 | WDCS1 | WDCS0 | WDSTBYON
* --------|---------|---------|-------|-------|-------|-------|----------
*/
// <h> WDT Control Option Byte (C0H)
// <e.4> Enable WDT (WDTON)
// <o.5..6> Watchdog timer window open period setting <2=> 75% <3=> 100%
// <o.1..3> Watchdog timer overflow time setting <0=> 2^6/fIL <1=> 2^7/fIL
// <2=> 2^8/fIL <3=> 2^9/fIL
// <4=> 2^11/fIL <5=> 2^13/fIL
// <6=> 2^14/fIL <7=> 2^16/fIL
// <e.0> Operation in Standby mode setting (WDSTBYON)
// <i> WDT Operaton in SLEEP/DEEPSLEEP mode.
// </e>
// <e.7> interrupt enable
// <i> interval interrupt is generated when 75% + 1/2 fIL of the overflow time is reached.
// </e>
// </e>
// </h>
0xEF,
/**
* @brief LVD Control BYTE (C1H)
* Please refer to the user manual for details.
* 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
* -------|-------|-------|-------|-------|-------|---------|----------
* VPOC2 | VPOC1 | VPOC0 | 1 | LVIS1 | LVIS0 | LVIMDS1 | LVIMDS0
* -------|-------|-------|-------|-------|-------|---------|----------
*/
// <h> LVD Control Option Byte (C1H)
// <q.7> LVD OFF
// <i> If select this item, You can ignore the following three items.
// <e> interrupt mode
// <o.0..6> Voltage detection setting (VLVD) <0x3D=> VLVD = 1.88V/1.84V
// <0x39=> VLVD = 1.98V/1.94V
// <0x35=> VLVD = 2.09V/2.04V
// <0x5D=> VLVD = 2.50V/2.45V
// <0x59=> VLVD = 2.61V/2.55V
// <0x55=> VLVD = 2.71V/2.65V
// <0x7D=> VLVD = 2.81V/2.75V
// <0x79=> VLVD = 2.92V/2.86V
// <0x75=> VLVD = 3.02V/2.96V
// <i> Please setting the item for interrupt mode
// </e>
// <e> reset mode
// <o.0..6> Voltage detection setting (VLVD) <0x3F=> VLVD = 1.88V/1.84V
// <0x3B=> VLVD = 1.98V/1.94V
// <0x37=> VLVD = 2.09V/2.04V
// <0x5F=> VLVD = 2.50V/2.45V
// <0x5B=> VLVD = 2.61V/2.55V
// <0x57=> VLVD = 2.71V/2.65V
// <0x7F=> VLVD = 2.81V/2.75V
// <0x7B=> VLVD = 2.92V/2.86V
// <0x77=> VLVD = 3.02V/2.96V
// <i> Please setting the item for reset mode
// </e>
// <e> interrupt & reset mode
// <o.0..6> Voltage detection setting (VLVDH, VLVDL) <0x3A=> VLVDH = 1.98V/1.94V, VLVDL = 1.84V
// <0x36=> VLVDH = 2.09V/2.04V, VLVDL = 1.84V
// <0x32=> VLVDH = 3.13V/3.06V, VLVDL = 1.84V
// <0x5A=> VLVDH = 2.61V/2.55V, VLVDL = 2.45V
// <0x56=> VLVDH = 2.71V/2.65V, VLVDL = 2.45V
// <0x52=> VLVDH = 3.75V/3.67V, VLVDL = 2.45V
// <0x7A=> VLVDH = 2.92V/2.86V, VLVDL = 2.75V
// <0x76=> VLVDH = 3.02V/2.96V, VLVDL = 2.75V
// <0x72=> VLVDH = 4.06V/3.98V, VLVDL = 2.75V
// <i> Please setting the item for interrupt & reset mode
// </e>
// </h>
0xFF,
/**
* @brief HOCO Control BYTE (FRQSEL)
* Please refer to the user manual for details.
* 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
* -------|-------|-------|---------|---------|---------|---------|---------
* 1 | 1 | 1 | FRQSEL4 | FRQSEL3 | FRQSEL2 | FRQSEL1 | FRQSEL0
* -------|-------|-------|---------|---------|---------|---------|---------
*/
// <h> HOCO Control Option Byte (C2H)
// <o.0..4> High-speed OCO clock setting <0xF0=> fHOCO = 64MHz, fIH = 64MHz
// <0xE8=> fHOCO = 48MHz, fIH = 48MHz
// <0xF1=> fHOCO = 64MHz, fIH = 32MHz
// <0xE9=> fHOCO = 48MHz, fIH = 24MHz
// <0xF2=> fHOCO = 64MHz, fIH = 16MHz
// <0xEA=> fHOCO = 48MHz, fIH = 12MHz
// <0xE0=> fHOCO = 8MHz, fIH = 8MHz
// <0xEB=> fHOCO = 48MHz, fIH = 6MHz
// <0xE1=> fHOCO = 8MHz, fIH = 4MHz
// <0xEC=> fHOCO = 48MHz, fIH = 3MHz
// <0xE2=> fHOCO = 8MHz, fIH = 2MHz
// <0xE3=> fHOCO = 8MHz, fIH = 1MHz
// </h>
0xF0,
/**
* @brief Flash Protect Control BYTE
* Please refer to the user manual for details.
*/
// <h> OCD Control Option Byte (C3H)
// <o.0..7> On-chip debug setting (OCDEN) <0xFF=> Enable <0xC3=> Disable
// <i> OCDM(500004H) == 0x3C && OCDEN == 0xC3: Debugger can not erease/write/read Flash.
// <i> OCDM(500004H) != 0x3C && OCDEN == 0xC3: Debugger can only chip erease Flash but cannot write/read Flash.
// </h>
0xFF
};
//-------- <<< end of configuration section >>> ------------------
/** @} */ /* End of group Configuration_of_User_Option_Byte */
/*----------------------------------------------------------------------------
System Core Clock Variable
*----------------------------------------------------------------------------*/
/* ToDo: initialize SystemCoreClock with the system core clock frequency value
achieved after system intitialization.
This means system core clock frequency after call to SystemInit() */
uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock)*/
/*----------------------------------------------------------------------------
Clock functions
*----------------------------------------------------------------------------*/
uint32_t CLK_GetHocoFreq(void)
{
uint32_t freq;
uint8_t frqsel = (*(uint8_t *)0x000000C2U);
frqsel &= 0xF8; /* Mask the lower 3 bits */
frqsel |= CGC->HOCODIV; /* Refer the value of HOCODIV */
switch(frqsel)
{
case HOCO_FREQ_64MHZ:
freq = 64000000U; /* fIH = 64MHz */
break;
case HOCO_FREQ_48MHZ:
freq = 48000000U; /* fIH = 48MHz */
break;
case HOCO_FREQ_32MHZ:
freq = 32000000U; /* fIH = 32MHz */
break;
case HOCO_FREQ_24MHZ:
freq = 24000000U; /* fIH = 24MHz */
break;
case HOCO_FREQ_16MHZ:
freq = 16000000U; /* fIH = 16MHz */
break;
case HOCO_FREQ_12MHZ:
freq = 12000000U; /* fIH = 12MHz */
break;
case HOCO_FREQ_8MHZ:
freq = 8000000U; /* fIH = 8MHz */
break;
case HOCO_FREQ_6MHZ:
freq = 6000000U; /* fIH = 6MHz */
break;
case HOCO_FREQ_4MHZ:
freq = 4000000U; /* fIH = 4MHz */
break;
case HOCO_FREQ_3MHZ:
freq = 3000000U; /* fIH = 3MHz */
break;
case HOCO_FREQ_2MHZ:
freq = 2000000U; /* fIH = 2MHz */
break;
case HOCO_FREQ_1MHZ:
freq = 1000000U; /* fIH = 1MHz */
break;
}
return(freq);
}
void SystemCoreClockUpdate (void) /* Get Core Clock Frequency */
{
/* ToDo: add code to calculate the system frequency based upon the current
register settings.
This function can be used to retrieve the system core clock frequeny
after user changed register sittings. */
SystemCoreClock = CLK_GetHocoFreq();
}
void SystemInit (void)
{
/* ToDo: add code to initialize the system
do not use global variables because this function is called before
reaching pre-main. RW section maybe overwritten afterwards. */
SystemCoreClock = CLK_GetHocoFreq();
/* RAM Parity Error Reset Disable */
SAF->RPECTL = 0x80U;
/* NVIC Clear Pending IRQ */
NVIC->ICPR[0U] = 0xFFFFFFFF;
/* NVIC Enable IRQs */
NVIC->ISER[0U] = 0xFFFFFFFF;
/* NVIC Lower Priority */
NVIC->IP[0U] = 0xC0C0C0C0;
NVIC->IP[1U] = 0xC0C0C0C0;
NVIC->IP[2U] = 0xC0C0C0C0;
NVIC->IP[3U] = 0xC0C0C0C0;
NVIC->IP[4U] = 0xC0C0C0C0;
NVIC->IP[5U] = 0xC0C0C0C0;
NVIC->IP[6U] = 0xC0C0C0C0;
NVIC->IP[7U] = 0xC0C0C0C0;
/* restart watchdog timer */
WDT->WDTE = 0xACU;
}
发表于 2026-5-30 12:57:18
楼主
发表于 2026-6-1 08:28:11
