From 526d9c5af29c8a6aedf7ff33c71c2991489fc46a Mon Sep 17 00:00:00 2001
From: cnlohr <lohr85@gmail.com>
Date: Fri, 19 Apr 2024 02:10:48 -0700
Subject: [PATCH] Get systick up and running + debug printf + input.
---
ch32v003fun/ch32v003fun.c | 1 -
ch32v003fun/ch32v003fun.h | 15 +++++++-
examples_x035/debugprintfdemo/Makefile | 10 +++++
.../debugprintfdemo/debugprintfdemo.c | 37 +++++++++++++++++++
examples_x035/debugprintfdemo/funconfig.h | 9 +++++
5 files changed, 70 insertions(+), 2 deletions(-)
create mode 100644 examples_x035/debugprintfdemo/Makefile
create mode 100644 examples_x035/debugprintfdemo/debugprintfdemo.c
create mode 100644 examples_x035/debugprintfdemo/funconfig.h
diff --git a/ch32v003fun/ch32v003fun.c b/ch32v003fun/ch32v003fun.c
index 4af6ef5..252899e 100644
--- a/ch32v003fun/ch32v003fun.c
+++ b/ch32v003fun/ch32v003fun.c
@@ -1015,7 +1015,6 @@ asm volatile(
#endif
);
-
#if defined( FUNCONF_SYSTICK_USE_HCLK ) && FUNCONF_SYSTICK_USE_HCLK
SysTick->CTLR = 5;
#else
diff --git a/ch32v003fun/ch32v003fun.h b/ch32v003fun/ch32v003fun.h
index 572f5c7..f7823c2 100644
--- a/ch32v003fun/ch32v003fun.h
+++ b/ch32v003fun/ch32v003fun.h
@@ -11710,7 +11710,20 @@ typedef struct
__IO uint64_t CMP;
} SysTick_Type;
-#elif defined(CH32V10x) || defined(CH32X03x)
+#elif defined(CH32X03x)
+
+/* memory mapped structure for SysTick */
+typedef struct
+{
+ __IO uint32_t CTLR;
+ __IO uint32_t SR;
+ __IO uint32_t CNTL;
+ __IO uint32_t CNTH;
+ __IO uint32_t CMPL;
+ __IO uint32_t CMPH;
+} SysTick_Type;
+
+#elif defined(CH32V10x)
/* memory mapped structure for SysTick */
typedef struct
diff --git a/examples_x035/debugprintfdemo/Makefile b/examples_x035/debugprintfdemo/Makefile
new file mode 100644
index 0000000..8a29f56
--- /dev/null
+++ b/examples_x035/debugprintfdemo/Makefile
@@ -0,0 +1,10 @@
+all : flash
+
+TARGET:=debugprintfdemo
+TARGET_MCU:=CH32X035
+
+include ../../ch32v003fun/ch32v003fun.mk
+
+flash : cv_flash
+clean : cv_clean
+
diff --git a/examples_x035/debugprintfdemo/debugprintfdemo.c b/examples_x035/debugprintfdemo/debugprintfdemo.c
new file mode 100644
index 0000000..3c65c32
--- /dev/null
+++ b/examples_x035/debugprintfdemo/debugprintfdemo.c
@@ -0,0 +1,37 @@
+/* Small example showing how to use the SWIO programming pin to
+ do printf through the debug interface */
+
+#include "ch32v003fun.h"
+#include <stdio.h>
+
+uint32_t count;
+
+int last = 0;
+void handle_debug_input( int numbytes, uint8_t * data )
+{
+ last = data[0];
+ count += numbytes;
+}
+
+int main()
+{
+ SystemInit();
+
+ funGpioInitAll();
+
+ funPinMode( PA0, GPIO_CFGLR_OUT_10Mhz_PP );
+
+ while(1)
+ {
+ GPIOA->BSHR = 1; // Turn on GPIOs
+ printf( "+%lu %lu\n", count++ );
+ Delay_Ms(100);
+ int i;
+ for( i = 0; i < 10000; i++ )
+ poll_input();
+ GPIOA->BSHR = (1<<16); // Turn off GPIODs
+ printf( "-%lu[%c]\n", count++, last );
+ Delay_Ms(100);
+ }
+}
+
diff --git a/examples_x035/debugprintfdemo/funconfig.h b/examples_x035/debugprintfdemo/funconfig.h
new file mode 100644
index 0000000..a8a70b3
--- /dev/null
+++ b/examples_x035/debugprintfdemo/funconfig.h
@@ -0,0 +1,9 @@
+#ifndef _FUNCONFIG_H
+#define _FUNCONFIG_H
+
+// Though this should be on by default we can extra force it on.
+#define FUNCONF_USE_DEBUGPRINTF 1
+#define FUNCONF_DEBUGPRINTF_TIMEOUT (1<<31) // Wait for a very very long time.
+
+#endif
+
--
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