From 2e801412cced0d52508bf2d9b936f082b52dc5bb Mon Sep 17 00:00:00 2001
From: Alexander Mandera <alexander@mandera.eu>
Date: Thu, 22 Jun 2023 14:17:27 +0200
Subject: [PATCH] Use 144 MHz HSI
---
ch32v203fun/ch32v203fun.c | 5 ++---
ch32v203fun/ch32v203fun.h | 2 +-
examples_v203/blink/blink.c | 8 ++++----
3 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/ch32v203fun/ch32v203fun.c b/ch32v203fun/ch32v203fun.c
index fb4e9ca..e95da26 100644
--- a/ch32v203fun/ch32v203fun.c
+++ b/ch32v203fun/ch32v203fun.c
@@ -905,14 +905,13 @@ void handle_reset( void )
" mret\n" : : [main]"r"(main) );
}
-void SystemInit48HSI( void )
+void SystemInit144HSI( void )
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
RCC->CFGR0 = RCC_HPRE_DIV1 | RCC_PPRE2_DIV1 | RCC_PPRE1_DIV2;
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
- RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
- RCC->INTR = 0x009F0000;
+ RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
diff --git a/ch32v203fun/ch32v203fun.h b/ch32v203fun/ch32v203fun.h
index eea1d52..17fbddb 100644
--- a/ch32v203fun/ch32v203fun.h
+++ b/ch32v203fun/ch32v203fun.h
@@ -7368,7 +7368,7 @@ int main() __attribute__((used));
void SystemInit(void) __attribute__((used));
// Initialization functions
-void SystemInit48HSI( void );
+void SystemInit144HSI( void );
// TODO: Debug and UART
diff --git a/examples_v203/blink/blink.c b/examples_v203/blink/blink.c
index 0610d47..1b9bf74 100644
--- a/examples_v203/blink/blink.c
+++ b/examples_v203/blink/blink.c
@@ -1,12 +1,12 @@
// Could be defined here, or in the processor defines.
-#define SYSTEM_CORE_CLOCK 48000000
+#define SYSTEM_CORE_CLOCK 144000000
#include "ch32v203fun.h"
#include <stdio.h>
int main()
{
- SystemInit48HSI();
+ SystemInit144HSI();
// Enable GPIOs
//RCC->APB2PCENR |= RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOC;
@@ -19,8 +19,8 @@ int main()
while(1)
{
GPIOA->BSHR = (1<<15); // Turn on GPIO
- Delay_Ms( 250 );
+ Delay_Ms( 1000 );
GPIOA->BSHR = (1<<(16+15)); // Turn off GPIO
- Delay_Ms( 250 );
+ Delay_Ms( 1000 );
}
}
--
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