添加很多设备

2024-03-04 01:01:14 +08:00
parent bef8342c93
commit cb1b2eb7d4
35 changed files with 22897 additions and 20328 deletions
@@ -0,0 +1,139 @@
+/*
+ * at24cxx.c
+ *
+ *  Created on: Mar 3, 2024
+ *      Author: gxms0
+ */
+#include "at24cxx.h"
+
+
+void at24cxx_init()
+{
+
+}
+/*
+
+uint8_t x24Cxx_ReadByte(uint16_t u16Addr)
+{
+    uint8_t u8Data = 0;
+    IIC_Start();//起始信号
+    IIC_WriteByte(DEV_ADDR | WRITE_CMD);//器件寻址+读/写选择
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)((u16Addr >> 8) & 0xFF));
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)(u16Addr & 0xFF));
+    IIC_WaitAck();//等待应答
+    IIC_Start();//起始信号
+    IIC_WriteByte(DEV_ADDR | READ_CMD);//器件寻址+读
+    IIC_WaitAck();//等待应答
+    u8Data = IIC_ReadByte();
+    IIC_NoAck();
+    IIC_Stop();//停止信号
+    return u8Data;
+}
+
+
+void at24cxx_WriteByte(uint16_t u16Addr, uint8_t u8Data)
+{
+   x24Cxx_WriteEnable();//使能写入
+   IIC_Start();//起始信号
+   IIC_WriteByte(DEV_ADDR | WRITE_CMD);//器件寻址+读/写选择
+   IIC_WaitAck();//等待应答
+   IIC_WriteByte((uint8_t)((u16Addr >> 8) & 0xFF));
+   IIC_WaitAck();//等待应答
+   IIC_WriteByte((uint8_t)(u16Addr & 0xFF));
+   IIC_WaitAck();//等待应答
+   IIC_WriteByte(u8Data);
+   IIC_WaitAck();//等待应答
+   IIC_Stop();//停止信号
+   x24Cxx_WriteDisble();//禁止写入
+}
+
+void x24Cxx_ReadPage(uint16_t u16Addr, uint8_t u8Len, uint8_t *pBuff)
+{
+    uint8_t i;
+    IIC_Start();//起始信号
+    IIC_WriteByte(DEV_ADDR | WRITE_CMD);//器件寻址+读/写选择
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)((u16Addr >> 8) & 0xFF));
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)(u16Addr & 0xFF));
+    IIC_WaitAck();//等待应答
+    IIC_Start();//起始信号
+    IIC_WriteByte(DEV_ADDR | READ_CMD);//器件寻址+读
+    IIC_WaitAck();//等待应答
+    if (u8Len > PAGE_SIZE)//长度大于页的长度
+    {
+        u8Len = PAGE_SIZE;
+    }
+    if ((u16Addr + (uint16_t)u8Len) > CAPACITY_SIZE)//超过容量
+    {
+        u8Len = (uint8_t)(CAPACITY_SIZE - u16Addr);
+    }
+    if (((u16Addr % PAGE_SIZE) + (uint16_t)u8Len) > PAGE_SIZE)//判断是否跨页
+    {
+        u8Len -= (uint8_t)((u16Addr + (uint16_t)u8Len) % PAGE_SIZE);//跨页，截掉跨页的部分
+    }
+    for (i = 0; i < (u8Len - 1); i++)
+    {
+        *(pBuff + i) = IIC_ReadByte();
+        IIC_Ack();//主机应答
+    }
+    *(pBuff + u8Len - 1) = IIC_ReadByte();
+    IIC_NoAck();//最后一个不应答
+    IIC_Stop();//停止信号
+}
+
+
+void at24cxx_WritePage(uint16_t u16Addr, uint8_t u8Len, uint8_t *pData)
+{
+    uint8_t i;
+    x24Cxx_WriteEnable();//使能写入
+    IIC_Start();//起始信号
+    IIC_WriteByte(DEV_ADDR | WRITE_CMD);//器件寻址+读/写选择
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)((u16Addr >> 8) & 0xFF));
+    IIC_WaitAck();//等待应答
+    IIC_WriteByte((uint8_t)(u16Addr & 0xFF));
+    IIC_WaitAck();//等待应答
+    if (u8Len > PAGE_SIZE)//长度大于页的长度
+    {
+        u8Len = PAGE_SIZE;
+    }
+    if ((u16Addr + (uint16_t)u8Len) > CAPACITY_SIZE)//超过容量
+    {
+        u8Len = (uint8_t)(CAPACITY_SIZE - u16Addr);
+    }
+    if (((u16Addr % PAGE_SIZE) + (uint16_t)u8Len) > PAGE_SIZE)//判断是否跨页
+    {
+        u8Len -= (uint8_t)((u16Addr + (uint16_t)u8Len) % PAGE_SIZE);//跨页，截掉跨页的部分
+    }
+
+    for (i = 0; i < u8Len; i++)
+    {
+        IIC_WriteByte(*(pData + i));
+        IIC_WaitAck();//等待应答
+    }
+    IIC_Stop();//停止信号
+    x24Cxx_WriteDisble();//禁止写入
+}
+*/
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