add Gokit3 board support

2020-03-02 09:21:46 +08:00
parent 01cf148965
commit e40ef2019e
27 changed files with 5337 additions and 0 deletions
--- a/board/GoKit3_STM32F103C8T6/BSP/Src/dwt.c
+++ b/board/GoKit3_STM32F103C8T6/BSP/Src/dwt.c
@@ -0,0 +1,36 @@
+#include "dwt.h"
+
+static uint32_t cpuclkfeq;
+
+void dwt_delay_init(uint32_t clk)
+{
+    cpuclkfeq = clk;
+    DEM_CR         |=  DEM_CR_TRCENA;
+    DWT_CYCCNT      = 0u;
+    DWT_CR         |= DWT_CR_CYCCNTENA;
+}
+
+void delay_us(uint32_t usec)
+
+{
+    uint32_t startts, endts, ts;
+	
+    startts = DWT_CYCCNT;
+
+    ts =  usec * (cpuclkfeq / (1000 * 1000));
+    endts = startts + ts;
+    if(endts > startts)
+    {
+        while(DWT_CYCCNT < endts);
+    }
+    else
+    {
+        while(DWT_CYCCNT > endts);
+        while(DWT_CYCCNT < endts);
+    }
+}
+
+void delay_ms(__IO uint32_t nTime)
+{
+    delay_us(1000 * nTime);
+}