上电时间计算
前言：
CH573/582上电到运行第一个初始化的时间最快约53ms左右；592最快约22ms左右。
注意将串口免按键功能关闭。
思路：
上电之后从启动文件启动，直接跳转到60M主频进行运行，然后在main函数中翻转io进行判断时间。
测试工具，使用功耗计测试（可以看到上电的波形和运行到翻转io的波形）。
代码（CH582）：
启动文件：
startup.s
.section .init,"ax",@progbits
.global _start
.align 1
_start:
j handle_reset
.section .vector,"ax",@progbits
.align 1
_vector_base:
.option norvc;
.word 0
.word 0
.word NMI_Handler /* NMI Handler */
.word HardFault_Handler /* Hard Fault Handler */
.word 0xF5F9BDA9
.word Ecall_M_Mode_Handler /* 5 */
.word 0
.word 0
.word Ecall_U_Mode_Handler /* 8 */
.word Break_Point_Handler /* 9 */
.word 0
.word 0
.word SysTick_Handler /* SysTick Handler */
.word 0
.word SW_Handler /* SW Handler */
.word 0
/* External Interrupts */
.word TMR0_IRQHandler /* 0: TMR0 */
.word GPIOA_IRQHandler /* GPIOA */
.word GPIOB_IRQHandler /* GPIOB */
.word SPI0_IRQHandler /* SPI0 */
.word BB_IRQHandler /* BLEB */
.word LLE_IRQHandler /* BLEL */
.word USB_IRQHandler /* USB */
.word USB2_IRQHandler /* USB2 */
.word TMR1_IRQHandler /* TMR1 */
.word TMR2_IRQHandler /* TMR2 */
.word UART0_IRQHandler /* UART0 */
.word UART1_IRQHandler /* UART1 */
.word RTC_IRQHandler /* RTC */
.word ADC_IRQHandler /* ADC */
.word I2C_IRQHandler /* I2C */
.word PWMX_IRQHandler /* PWMX */
.word TMR3_IRQHandler /* TMR3 */
.word UART2_IRQHandler /* UART2 */
.word UART3_IRQHandler /* UART3 */
.word WDOG_BAT_IRQHandler /* WDOG_BAT */
.option rvc;
.section .vector_handler, "ax", @progbits
.weak NMI_Handler
.weak HardFault_Handler
.weak Ecall_M_Mode_Handler
.weak Ecall_U_Mode_Handler
.weak Break_Point_Handler
.weak SysTick_Handler
.weak SW_Handler
.weak TMR0_IRQHandler
.weak GPIOA_IRQHandler
.weak GPIOB_IRQHandler
.weak SPI0_IRQHandler
.weak BB_IRQHandler
.weak LLE_IRQHandler
.weak USB_IRQHandler
.weak USB2_IRQHandler
.weak TMR1_IRQHandler
.weak TMR2_IRQHandler
.weak UART0_IRQHandler
.weak UART1_IRQHandler
.weak RTC_IRQHandler
.weak ADC_IRQHandler
.weak I2C_IRQHandler
.weak PWMX_IRQHandler
.weak TMR3_IRQHandler
.weak UART2_IRQHandler
.weak UART3_IRQHandler
.weak WDOG_BAT_IRQHandler
NMI_Handler:
HardFault_Handler:
Ecall_M_Mode_Handler:
Ecall_U_Mode_Handler:
Break_Point_Handler:
SysTick_Handler:
SW_Handler:
TMR0_IRQHandler:
GPIOA_IRQHandler:
GPIOB_IRQHandler:
SPI0_IRQHandler:
BB_IRQHandler:
LLE_IRQHandler:
USB_IRQHandler:
USB2_IRQHandler:
TMR1_IRQHandler:
TMR2_IRQHandler:
UART0_IRQHandler:
UART1_IRQHandler:
RTC_IRQHandler:
ADC_IRQHandler:
I2C_IRQHandler:
PWMX_IRQHandler:
TMR3_IRQHandler:
UART2_IRQHandler:
UART3_IRQHandler:
WDOG_BAT_IRQHandler:
1:
j 1b
.section .handle_reset,"ax",@progbits
.weak handle_reset
.align 1
handle_reset:
.option push
.option norelax
la gp, __global_pointer$
.option pop
1:
la sp, _eusrstack
2:
la a0, _highcode_copy_lma
la a1, _highcode_copy_start
la a2, _highcode_copy_end
bgeu a1, a2, 2f
1:
lw t0, (a0)
sw t0, (a1)
addi a0, a0, 4
addi a1, a1, 4
bltu a1, a2, 1b
jal SystemInit
/* Load highcode code section from flash to RAM */
/*
2:
la a0, _highcode_lma
la a1, _highcode_vma_start
la a2, _highcode_vma_end
bgeu a1, a2, 2f
1:
lw t0, (a0)
sw t0, (a1)
addi a0, a0, 4
addi a1, a1, 4
bltu a1, a2, 1b
2:
la a0, _data_lma
la a1, _data_vma
la a2, _edata
bgeu a1, a2, 2f
1:
lw t0, (a0)
sw t0, (a1)
addi a0, a0, 4
addi a1, a1, 4
bltu a1, a2, 1b
2:
la a0, _sbss
la a1, _ebss
bgeu a0, a1, 2f
1:
sw zero, (a0)
addi a0, a0, 4
bltu a0, a1, 1b
*/
2:
/* 流水线控制位 & 动态预测控制位 */
li t0, 0x1f
csrw 0xbc0, t0
/* 打开嵌套中断、硬件压栈功能 */
li t0, 0x3
csrw 0x804, t0
li t0, 0x88
csrs mstatus, t0
la t0, _vector_base
/* 配置向量表模式为绝对地址模式 */
ori t0, t0, 3
csrw mtvec, t0
la t0, main
csrw mepc, t0
mret跳转并配置时钟c文件：
soctestct.c
/*
* soctest.c
*
* Created on: Jan 4, 2024
* Author: OWNER
*/
#include "soctestct.h"
typedef enum
{
CLK_FLASH_4 = 0X01,
CLK_FLASH_5 = 0X05,
CLK_FLASH_6 = 0X02,
CLK_FLASH_7 = 0X06,
CLK_FLASH_8 = 0X03,
CLK_FLASH_9 = 0X07,
AHB_READY_SHORT = 0X00,
AHB_READY_NORMAL = 0X40,
AHB_READY_LONG = 0X80,
AHB_READY_LONGER = 0XC0,
AHB_SAMPLE_NORMAL = 0X00,
AHB_SAMPLE_DELAY = 0X10,
AHB_SAMPLE_BEFORE = 0X20,
AHB_SCSWIDTH_3 = 0X00,
AHB_SCSWIDTH_2 = 0X08,
}FLASH_CLKTypeDef;
extern uint32_t _highcode_lma;
extern uint32_t _highcode_vma_start;
extern uint32_t _highcode_vma_end;
extern uint32_t _data_lma;
extern uint32_t _data_vma;
extern uint32_t _edata;
extern uint32_t _sbss;
extern uint32_t _ebss;
__attribute__((section(".highcode_copy")))
static void __attribute__((noinline)) copy_section(uint32_t * p_load, uint32_t * p_vma, uint32_t * p_vma_end)
{
while(p_vma <= p_vma_end)
{
*p_vma = *p_load;
++p_load;
++p_vma;
}
}
__attribute__((section(".highcode_copy")))
static void __attribute__((noinline)) zero_section(uint32_t * start, uint32_t * end)
{
uint32_t * p_zero = start;
while(p_zero <= end)
{
*p_zero = 0;
++p_zero;
}
}
__attribute__((section(".highcode_copy")))
void mySystemInit(void) {
uint32_t i;
uint8_t sc = 0x46;
sys_safe_access_enable();
R8_PLL_CONFIG &= ~(1 << 5); //
sys_safe_access_disable();
sys_safe_access_enable();
R8_HFCK_PWR_CTRL |= RB_CLK_PLL_PON | RB_CLK_XT32M_PON;
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();
// }
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);
sys_safe_access_disable();
__nop();
__nop();
__nop();
__nop();
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 = 0X55;
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();
copy_section(&_highcode_lma, &_highcode_vma_start, &_highcode_vma_end);
copy_section(&_data_lma, &_data_vma, &_edata);
zero_section(&_sbss, &_ebss);
// R32_PB_OUT |= 1<<0;
// R32_PB_PD_DRV &= ~(1<<0);
// R32_PB_DIR |= 1<<0;
// mDelaymS(1);
// R32_PB_CLR |= 1<<0;
// mDelaymS(1);
// R32_PB_OUT |= 1<<0;
// mDelaymS(1);
// R32_PB_CLR |= 1<<0;
}
void SystemInit(void){
mySystemInit();
}跳转并配置时钟h文件：
socttestct.h
/*
* soctest.h
*
* Created on: Jan 4, 2024
* Author: OWNER
*/
#ifndef SRC_INCLUDE_SOCTEST_H_
#define SRC_INCLUDE_SOCTEST_H_
#include "CH58x_common.h"
#define DEFINE_FAST_IRQ_HANDLER(irq_handler) void irq_handler() __attribute__((interrupt("WCH-Interrupt-fast")))
DEFINE_FAST_IRQ_HANDLER(NMI_Handler);
DEFINE_FAST_IRQ_HANDLER(HardFault_Handler);
DEFINE_FAST_IRQ_HANDLER(Ecall_U_Mode_Handler);
DEFINE_FAST_IRQ_HANDLER(SysTick_Handler);
DEFINE_FAST_IRQ_HANDLER(SW_Handler);
DEFINE_FAST_IRQ_HANDLER(TMR0_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(GPIOA_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(GPIOB_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(SPI0_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(BB_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(LLE_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(USB_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(TMR1_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(TMR2_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(UART0_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(UART1_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(RTC_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(ADC_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(PWMX_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(TMR3_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(UART2_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(UART3_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(I2C_IRQHandler);
DEFINE_FAST_IRQ_HANDLER(WDOG_BAT_IRQHandler);
void SystemInit(void);
void mySystemInit(void);
#endif /* SRC_INCLUDE_SOCTEST_H_ */
