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CH58x_sys.c
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CH58x_sys.c
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/********************************** (C) COPYRIGHT *******************************
* File Name : CH58x_SYS.c
* Author : WCH
* Version : V1.2
* Date : 2021/11/17
* Description
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "CH58x_common.h"
volatile uint32_t IRQ_STA = 0;
/*********************************************************************
* @fn SetSysClock
*
* @brief 配置系统运行时钟
*
* @param sc - 系统时钟源选择 refer to SYS_CLKTypeDef
*
* @return none
*/
__HIGH_CODE
void SetSysClock(SYS_CLKTypeDef sc)
{
uint32_t i;
sys_safe_access_enable();
R8_PLL_CONFIG &= ~(1 << 5); //
sys_safe_access_disable();
if(sc & 0x20)
{ // HSE div
if(!(R8_HFCK_PWR_CTRL & RB_CLK_XT32M_PON))
{
sys_safe_access_enable();
R8_HFCK_PWR_CTRL |= RB_CLK_XT32M_PON; // HSE power on
sys_safe_access_disable();
for(i = 0; i < 1200; i++)
{
__nop();
__nop();
}
}
sys_safe_access_enable();
R16_CLK_SYS_CFG = (0 << 6) | (sc & 0x1f);
__nop();
__nop();
__nop();
__nop();
sys_safe_access_disable();
sys_safe_access_enable();
SAFEOPERATE;
R8_FLASH_CFG = 0X51;
sys_safe_access_disable();
}
else if(sc & 0x40)
{ // PLL div
if(!(R8_HFCK_PWR_CTRL & RB_CLK_PLL_PON))
{
sys_safe_access_enable();
R8_HFCK_PWR_CTRL |= RB_CLK_PLL_PON; // PLL power on
sys_safe_access_disable();
for(i = 0; i < 2000; i++)
{
__nop();
__nop();
}
}
sys_safe_access_enable();
R16_CLK_SYS_CFG = (1 << 6) | (sc & 0x1f);
__nop();
__nop();
__nop();
__nop();
sys_safe_access_disable();
if(sc == CLK_SOURCE_PLL_80MHz)
{
sys_safe_access_enable();
R8_FLASH_CFG = 0X02;
sys_safe_access_disable();
}
else
{
sys_safe_access_enable();
R8_FLASH_CFG = 0X52;
sys_safe_access_disable();
}
}
else
{
sys_safe_access_enable();
R16_CLK_SYS_CFG |= RB_CLK_SYS_MOD;
sys_safe_access_disable();
}
//更改FLASH clk的驱动能力
sys_safe_access_enable();
R8_PLL_CONFIG |= 1 << 7;
sys_safe_access_disable();
}
/*********************************************************************
* @fn GetSysClock
*
* @brief 获取当前系统时钟
*
* @param none
*
* @return Hz
*/
uint32_t GetSysClock(void)
{
uint16_t rev;
rev = R16_CLK_SYS_CFG & 0xff;
if((rev & 0x40) == (0 << 6))
{ // 32M进行分频
return (32000000 / (rev & 0x1f));
}
else if((rev & RB_CLK_SYS_MOD) == (1 << 6))
{ // PLL进行分频
return (480000000 / (rev & 0x1f));
}
else
{ // 32K做主频
return (32000);
}
}
/*********************************************************************
* @fn SYS_GetInfoSta
*
* @brief 获取当前系统信息状态
*
* @param i - refer to SYS_InfoStaTypeDef
*
* @return 是否开启
*/
uint8_t SYS_GetInfoSta(SYS_InfoStaTypeDef i)
{
if(i == STA_SAFEACC_ACT)
{
return (R8_SAFE_ACCESS_SIG & RB_SAFE_ACC_ACT);
}
else
{
return (R8_GLOB_CFG_INFO & (1 << i));
}
}
/*********************************************************************
* @fn SYS_ResetExecute
*
* @brief 执行系统软件复位
*
* @param none
*
* @return none
*/
__HIGH_CODE
void SYS_ResetExecute(void)
{
FLASH_ROM_SW_RESET();
sys_safe_access_enable();
R8_RST_WDOG_CTRL |= RB_SOFTWARE_RESET;
sys_safe_access_disable();
}
/*********************************************************************
* @fn SYS_DisableAllIrq
*
* @brief 关闭所有中断,并保留当前中断值
*
* @param pirqv - 当前保留中断值
*
* @return none
*/
void SYS_DisableAllIrq(uint32_t *pirqv)
{
*pirqv = (PFIC->ISR[0] >> 8) | (PFIC->ISR[1] << 24);
PFIC->IRER[0] = 0xffffffff;
PFIC->IRER[1] = 0xffffffff;
}
/*********************************************************************
* @fn SYS_RecoverIrq
*
* @brief 恢复之前关闭的中断值
*
* @param irq_status - 当前保留中断值
*
* @return none
*/
void SYS_RecoverIrq(uint32_t irq_status)
{
PFIC->IENR[0] = (irq_status << 8);
PFIC->IENR[1] = (irq_status >> 24);
}
/*********************************************************************
* @fn SYS_GetSysTickCnt
*
* @brief 获取当前系统(SYSTICK)计数值
*
* @param none
*
* @return 当前计数值
*/
uint32_t SYS_GetSysTickCnt(void)
{
uint32_t val;
val = SysTick->CNT;
return (val);
}
/*********************************************************************
* @fn WWDG_ITCfg
*
* @brief 看门狗定时器溢出中断使能
*
* @param s - 溢出是否中断
*
* @return none
*/
void WWDG_ITCfg(FunctionalState s)
{
uint8_t ctrl = R8_RST_WDOG_CTRL;
if(s == DISABLE)
{
ctrl &= ~RB_WDOG_INT_EN;
}
else
{
ctrl |= RB_WDOG_INT_EN;
}
sys_safe_access_enable();
R8_RST_WDOG_CTRL = ctrl;
sys_safe_access_disable();
}
/*********************************************************************
* @fn WWDG_ResetCfg
*
* @brief 看门狗定时器复位功能
*
* @param s - 溢出是否复位
*
* @return none
*/
void WWDG_ResetCfg(FunctionalState s)
{
uint8_t ctrl = R8_RST_WDOG_CTRL;
if(s == DISABLE)
{
ctrl &= ~RB_WDOG_RST_EN;
}
else
{
ctrl |= RB_WDOG_RST_EN;
}
sys_safe_access_enable();
R8_RST_WDOG_CTRL = ctrl;
sys_safe_access_disable();
}
/*********************************************************************
* @fn WWDG_ClearFlag
*
* @brief 清除看门狗中断标志,重新加载计数值也可清除
*
* @param none
*
* @return none
*/
void WWDG_ClearFlag(void)
{
sys_safe_access_enable();
R8_RST_WDOG_CTRL |= RB_WDOG_INT_FLAG;
sys_safe_access_disable();
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief 硬件错误中断,进入后执行复位,复位类型为上电复位
*
* @param none
*
* @return none
*/
__INTERRUPT
__HIGH_CODE
__attribute__((weak))
void HardFault_Handler(void)
{
FLASH_ROM_SW_RESET();
sys_safe_access_enable();
R16_INT32K_TUNE = 0xFFFF;
sys_safe_access_disable();
sys_safe_access_enable();
R8_RST_WDOG_CTRL |= RB_SOFTWARE_RESET;
sys_safe_access_disable();
while(1);
}
/*********************************************************************
* @fn mDelayuS
*
* @brief uS 延时
*
* @param t - 时间参数
*
* @return none
*/
__HIGH_CODE
void mDelayuS(uint16_t t)
{
uint32_t i;
#if(FREQ_SYS == 80000000)
i = t * 20;
#elif(FREQ_SYS == 60000000)
i = t * 15;
#elif(FREQ_SYS == 48000000)
i = t * 12;
#elif(FREQ_SYS == 40000000)
i = t * 10;
#elif(FREQ_SYS == 32000000)
i = t << 3;
#elif(FREQ_SYS == 24000000)
i = t * 6;
#elif(FREQ_SYS == 16000000)
i = t << 2;
#elif(FREQ_SYS == 8000000)
i = t << 1;
#elif(FREQ_SYS == 4000000)
i = t;
#elif(FREQ_SYS == 2000000)
i = t >> 1;
#elif(FREQ_SYS == 1000000)
i = t >> 2;
#else
i = t << 1;
#endif
do
{
__nop();
} while(--i);
}
/*********************************************************************
* @fn mDelaymS
*
* @brief mS 延时
*
* @param t - 时间参数
*
* @return none
*/
__HIGH_CODE
void mDelaymS(uint16_t t)
{
uint16_t i;
for(i = 0; i < t; i++)
{
mDelayuS(1000);
}
}
#ifdef DEBUG
int _write(int fd, char *buf, int size)
{
int i;
for(i = 0; i < size; i++)
{
#if DEBUG == Debug_UART0
while(R8_UART0_TFC == UART_FIFO_SIZE); /* 等待数据发送 */
R8_UART0_THR = *buf++; /* 发送数据 */
#elif DEBUG == Debug_UART1
while(R8_UART1_TFC == UART_FIFO_SIZE); /* 等待数据发送 */
R8_UART1_THR = *buf++; /* 发送数据 */
#elif DEBUG == Debug_UART2
while(R8_UART2_TFC == UART_FIFO_SIZE); /* 等待数据发送 */
R8_UART2_THR = *buf++; /* 发送数据 */
#elif DEBUG == Debug_UART3
while(R8_UART3_TFC == UART_FIFO_SIZE); /* 等待数据发送 */
R8_UART3_THR = *buf++; /* 发送数据 */
#endif
}
return size;
}
#endif
/*********************************************************************
* @fn _sbrk
*
* @brief Change the spatial position of data segment.
*
* @return size: Data length
*/
__attribute__((used))
void *_sbrk(ptrdiff_t incr)
{
extern char _end[];
extern char _heap_end[];
static char *curbrk = _end;
if ((curbrk + incr < _end) || (curbrk + incr > _heap_end))
return NULL - 1;
curbrk += incr;
return curbrk - incr;
}