Diff: PeripheralLayer/PeMod_ZE08.cpp

Revision:

0:3dac4f477e98

Child:

1:0c1053275589

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PeripheralLayer/PeMod_ZE08.cpp	Wed Jul 08 17:50:18 2015 +0000
@@ -0,0 +1,71 @@
+#include "SysConfig.h"
+
+#define ZE08_CMD_LEN   9
+#define ZE08_DAT_LEN   9
+
+#define uart_ze08 uart_sen
+#define uart_db uart_pc
+
+const uint8_t ZE08_CmdManualMode[ZE08_CMD_LEN] = {0xFF, 0x01, 0x78, 0x41, 0x00, 0x00, 0x00, 0x00, 0x46};
+const uint8_t ZE08_CmdReadCH2O[ZE08_CMD_LEN] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79};
+
+int ZE08_Init(void)
+{
+    //Change ZE08 to manual request & reply mode
+    for(int i=0; i<ZE08_CMD_LEN; i++)
+        uart_ze08.putc(ZE08_CmdManualMode[i]);
+    
+    return 0;    
+}
+
+int ZE08_ReadCH2O(void)
+{
+    int ch2oVol, i, sum = 0; 
+    uint8_t data[ZE08_DAT_LEN];
+           
+    for(i=0; i<ZE08_CMD_LEN; i++)
+        uart_ze08.putc(ZE08_CmdReadCH2O[i]);
+        
+    #if defined uart_db
+    uart_db.printf("\n\rZE08 return ");
+    #endif
+        
+    for(i=0; i<ZE08_DAT_LEN; i++)
+    {
+        while(!uart_ze08.readable());
+        data[i] = uart_ze08.getc();
+        #if defined uart_db
+        uart_db.printf("0x%02X ", data[i]);
+        #endif
+    }    
+    
+    #if defined uart_db
+    uart_db.printf(".\n\r");
+    #endif
+    
+    sum = ZE08_CalCheckSum(data);
+    if(data[ZE08_DAT_LEN - 1] == sum)
+    {
+        ch2oVol = data[2] *256 + data[3];
+        return ch2oVol;
+    }
+    else
+    {
+        #if defined uart_db
+        uart_db.printf("Incorrect checksum 0x%02X, expect 0x%02X.\n\r", sum, data[ZE08_DAT_LEN - 1]);
+        #endif
+        return -1;
+    }
+}
+
+uint8_t ZE08_CalCheckSum(uint8_t *packet)
+{
+    uint8_t i, checksum = 0;
+    for( i = 1; i < 8; i++)
+    {
+        checksum += packet[i];
+    }
+    checksum = 0xff - checksum;
+    checksum += 1;
+    return checksum;
+}