初始化仓库

2025-08-31 21:43:17 +08:00
commit be600d0769
45 changed files with 22852 additions and 0 deletions
--- a/Source/clock_init.c
+++ b/Source/clock_init.c
@@ -0,0 +1,200 @@
+#include "clock_init.h"
+#include "delay.h"
+#include "uart.h"
+
+//22.11MHz的IRC参数寄存器 0xFB
+//24MHz的IRC参数寄存器 0xFB
+#define IRC_22M (*((uint8  idata*)0xFA))
+#define IRC_24M (*((uint8  idata*)0xFB))
+
+
+//内核频率
+int32 sys_clk = FOSC;
+
+
+
+//-------------------------------------------------------------------------------------------------------------------
+//  @brief      STC32G设置系统频率
+//  @param      NULL          	空值
+//  @return     void        	系统频率
+//  Sample usage:               
+//-------------------------------------------------------------------------------------------------------------------
+uint32 set_clk(void)
+{
+	
+	P_SW2 |= 0x80;
+
+	if(sys_clk == 22118400)
+	{
+		//选择 22.1184MHz
+		CLKDIV = 0x04;
+		IRTRIM = T22M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+	else if(sys_clk == 24000000)
+	{
+		//选择 24MHz
+		CLKDIV = 0x04;
+		IRTRIM = T24M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+	else if(sys_clk == 27000000)
+	{
+		//选择 27MHz
+		CLKDIV = 0x04;
+		IRTRIM = T27M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+	else if(sys_clk == 30000000)
+	{
+	
+		//选择 30MHz
+		CLKDIV = 0x04;
+		IRTRIM = T30M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+	else if(sys_clk == 33177600)
+	{
+		//选择 33.1776MHz
+		CLKDIV = 0x04;
+		IRTRIM = T33M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+	else if(sys_clk == 35000000)
+	{
+		//选择 35MHz
+		CLKDIV = 0x04;
+		IRTRIM = T35M_ADDR;
+		VRTRIM = VRT44M_ADDR;
+		IRCBAND = 0x03;
+		CLKDIV = 0x00;
+	}
+	else
+	{
+		sys_clk = 30000000;
+		//选择 30MHz
+		CLKDIV = 0x04;
+		IRTRIM = T30M_ADDR;
+		VRTRIM = VRT27M_ADDR;
+		IRCBAND = 0x02;
+		CLKDIV = 0x00;
+	}
+
+	return sys_clk;
+}
+
+
+
+
+
+void board_init(void)
+{
+	EAXFR = 1;				// 使能访问XFR
+	CKCON = 0x00;			// 设置外部数据总线为最快
+	WTST = 0;               // 设置程序代码等待参数，赋值为0可将CPU执行程序的速度设置为最快
+	SET_P54_RESRT;			// 使P54为复位引脚
+	P_SW2 = 0x80;			// 开启特殊地址访问
+
+#if (1 == EXTERNAL_CRYSTA_ENABLE)
+	XOSCCR = 0xc0; 			//启动外部晶振
+	while (!(XOSCCR & 1)); 	//等待时钟稳定
+	CLKDIV = 0x00; 			//时钟不分频
+	CLKSEL = 0x01; 			//选择外部晶振
+#else
+	//自动设置系统频率
+	#if (0 == FOSC)
+		sys_clk = set_clk();
+	#else
+		sys_clk = FOSC;
+	#endif
+#endif
+
+	delay_init();			//延时函数初始化
+	
+	WTST = 0;
+    P_SW2 |= 0x80;
+    CLKDIV = 0;				//24MHz主频，分频设置
+	
+	P0M0 = 0x00;
+	P0M1 = 0x00;
+	P1M0 = 0x00;
+	P1M1 = 0x00;
+	P2M0 = 0x00;
+	P2M1 = 0x00;
+	P3M0 = 0x00;
+	P3M1 = 0x00;
+	P4M0 = 0x00;
+	P4M1 = 0x00;
+	P5M0 = 0x00;
+	P5M1 = 0x00;
+	P6M0 = 0x00;
+	P6M1 = 0x00;
+	P7M0 = 0x00;
+	P7M1 = 0x00;
+	
+	ADCCFG = 0;
+	AUXR = 0;
+	SCON = 0;
+	S2CON = 0;
+	S3CON = 0;
+	S4CON = 0;
+	P_SW1 = 0;
+	IE2 = 0;
+	TMOD = 0;
+
+	P_SW2 |= 0x80;
+	
+#if (1 == USE_USB_CDC)
+	P3M0 &= ~0x03;
+    P3M1 |= 0x03;
+    
+    IRC48MCR = 0x80;
+    while (!(IRC48MCR & 0x01));
+    
+    USBCLK = 0x00;
+    USBCON = 0x90;
+	usb_init();
+	IE2 |= 0x80;
+	EA = 1;
+	while (DeviceState != DEVSTATE_CONFIGURED);     //等待USB完成配置
+#else
+	uart_init(DEBUG_UART, DEBUG_UART_RX_PIN, DEBUG_UART_TX_PIN, DEBUG_UART_BAUD, DEBUG_UART_TIM);
+#endif
+	EnableGlobalIRQ();
+}
+
+
+#if (1 == PRINTF_ENABLE)
+	#if (1==USE_USB_CDC)
+	#else
+		//重定义printf 数字 只能输出uint16
+		char putchar(char c)
+		{
+			uart_putchar(DEBUG_UART, c);//把自己实现的串口打印一字节数据的函数替换到这里
+
+			return c;
+		}
+	#endif
+#endif
+
+void DisableGlobalIRQ(void)
+{
+	EA = 0;
+}
+
+
+void EnableGlobalIRQ(void)
+{
+	EA = 1;
+}
+