From ffa1d28e6d0b3f392116289f306aed49f7a6be44 Mon Sep 17 00:00:00 2001
From: murmur <test@test.com>
Date: Tue, 23 Apr 2024 21:39:54 +0800
Subject: [PATCH] =?UTF-8?q?Matebook=E6=9B=B4=E6=96=B0=E4=BA=861=E4=B8=AA?=
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Affected files:
MCU/WCH-南京沁恒/CH57x.md
---
 MCU/WCH-南京沁恒/CH57x.md | 60 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 MCU/WCH-南京沁恒/CH57x.md

diff --git a/MCU/WCH-南京沁恒/CH57x.md b/MCU/WCH-南京沁恒/CH57x.md
new file mode 100644
index 0000000..4df38fd
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+++ b/MCU/WCH-南京沁恒/CH57x.md
@@ -0,0 +1,60 @@
+---
+created: 2024-04-23
+tags:
+  - "#RISC_V"
+  - "#低功耗"
+  - "#CH57X"
+  - 代码块
+  - mcu
+---
+# 低功耗
+使用官方例子最低功耗仍有约2mA，经察，默认GPIO得配置改为`GPIO_ModeIN_PD`能显著降低功耗，可低至约35uA，代码如下：
+```c
+/*********************************************************************
+ * @fn      DebugInit
+ *
+ * @brief   调试初始化
+ *
+ * @return  none
+ */
+void DebugInit(void)
+{
+    GPIOA_SetBits(GPIO_Pin_9);
+    GPIOA_ModeCfg(GPIO_Pin_9, GPIO_ModeOut_PP_5mA);
+    UART1_DefInit();
+}
+
+/*********************************************************************
+ * @fn      main
+ *
+ * @brief   主函数
+ *
+ * @return  none
+ */
+int main()
+{
+    SetSysClock(CLK_SOURCE_PLL_60MHz);
+
+    GPIOA_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PD);
+    GPIOB_ModeCfg(GPIO_Pin_All, GPIO_ModeIN_PD);
+    GPIOA_ModeCfg(GPIO_Pin_8, GPIO_ModeIN_PU);
+    /* 配置串口调试 */
+    DebugInit();
+    PRINT("Start @ChipID=%02x\n", R8_CHIP_ID);
+    DelayMs(200);
+    
+    PRINT("sleep mode sleep \n");
+    DelayMs(2);
+    LowPower_Sleep(RB_PWR_RAM16K | RB_PWR_RAM2K); //只保留14+2K SRAM 供电
+    HSECFG_Current(HSE_RCur_100);                 // 降为额定电流(低功耗函数中提升了HSE偏置电流)
+    DelayMs(5);
+    PRINT("wake.. \n");
+    DelayMs(500);
+	while(1);
+}
+```
+参考的一些例子：
+[基于CH573的BLE温湿度传感器](https://yuanze.wang/posts/ch573-temp-humid-beacon/)，源码可编译
+[CH571F无线温湿度计](https://oshwhub.com/thelight/ch571f-wu-xian-wen-shi-du-ji)，源码不能正常编译
+
+