Xiaohai Li / Mbed 2 deprecated AirBoxProto

Demo

Dependencies:   mbed

PeripheralLayer/PeMod_ZE08.cpp@0:3dac4f477e98, 2015-07-08 (annotated)

Committer:
nightseas
Date:
Wed Jul 08 17:50:18 2015 +0000
Revision:
0:3dac4f477e98
Child:
1:0c1053275589
Basic Demo; Implement: Debug serial commander, Gas sensors, Temp&Rh sensor.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nightseas 0:3dac4f477e98 1 #include "SysConfig.h"
nightseas 0:3dac4f477e98 2
nightseas 0:3dac4f477e98 3 #define ZE08_CMD_LEN 9
nightseas 0:3dac4f477e98 4 #define ZE08_DAT_LEN 9
nightseas 0:3dac4f477e98 5
nightseas 0:3dac4f477e98 6 #define uart_ze08 uart_sen
nightseas 0:3dac4f477e98 7 #define uart_db uart_pc
nightseas 0:3dac4f477e98 8
nightseas 0:3dac4f477e98 9 const uint8_t ZE08_CmdManualMode[ZE08_CMD_LEN] = {0xFF, 0x01, 0x78, 0x41, 0x00, 0x00, 0x00, 0x00, 0x46};
nightseas 0:3dac4f477e98 10 const uint8_t ZE08_CmdReadCH2O[ZE08_CMD_LEN] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79};
nightseas 0:3dac4f477e98 11
nightseas 0:3dac4f477e98 12 int ZE08_Init(void)
nightseas 0:3dac4f477e98 13 {
nightseas 0:3dac4f477e98 14 //Change ZE08 to manual request & reply mode
nightseas 0:3dac4f477e98 15 for(int i=0; i<ZE08_CMD_LEN; i++)
nightseas 0:3dac4f477e98 16 uart_ze08.putc(ZE08_CmdManualMode[i]);
nightseas 0:3dac4f477e98 17
nightseas 0:3dac4f477e98 18 return 0;
nightseas 0:3dac4f477e98 19 }
nightseas 0:3dac4f477e98 20
nightseas 0:3dac4f477e98 21 int ZE08_ReadCH2O(void)
nightseas 0:3dac4f477e98 22 {
nightseas 0:3dac4f477e98 23 int ch2oVol, i, sum = 0;
nightseas 0:3dac4f477e98 24 uint8_t data[ZE08_DAT_LEN];
nightseas 0:3dac4f477e98 25
nightseas 0:3dac4f477e98 26 for(i=0; i<ZE08_CMD_LEN; i++)
nightseas 0:3dac4f477e98 27 uart_ze08.putc(ZE08_CmdReadCH2O[i]);
nightseas 0:3dac4f477e98 28
nightseas 0:3dac4f477e98 29 #if defined uart_db
nightseas 0:3dac4f477e98 30 uart_db.printf("\n\rZE08 return ");
nightseas 0:3dac4f477e98 31 #endif
nightseas 0:3dac4f477e98 32
nightseas 0:3dac4f477e98 33 for(i=0; i<ZE08_DAT_LEN; i++)
nightseas 0:3dac4f477e98 34 {
nightseas 0:3dac4f477e98 35 while(!uart_ze08.readable());
nightseas 0:3dac4f477e98 36 data[i] = uart_ze08.getc();
nightseas 0:3dac4f477e98 37 #if defined uart_db
nightseas 0:3dac4f477e98 38 uart_db.printf("0x%02X ", data[i]);
nightseas 0:3dac4f477e98 39 #endif
nightseas 0:3dac4f477e98 40 }
nightseas 0:3dac4f477e98 41
nightseas 0:3dac4f477e98 42 #if defined uart_db
nightseas 0:3dac4f477e98 43 uart_db.printf(".\n\r");
nightseas 0:3dac4f477e98 44 #endif
nightseas 0:3dac4f477e98 45
nightseas 0:3dac4f477e98 46 sum = ZE08_CalCheckSum(data);
nightseas 0:3dac4f477e98 47 if(data[ZE08_DAT_LEN - 1] == sum)
nightseas 0:3dac4f477e98 48 {
nightseas 0:3dac4f477e98 49 ch2oVol = data[2] *256 + data[3];
nightseas 0:3dac4f477e98 50 return ch2oVol;
nightseas 0:3dac4f477e98 51 }
nightseas 0:3dac4f477e98 52 else
nightseas 0:3dac4f477e98 53 {
nightseas 0:3dac4f477e98 54 #if defined uart_db
nightseas 0:3dac4f477e98 55 uart_db.printf("Incorrect checksum 0x%02X, expect 0x%02X.\n\r", sum, data[ZE08_DAT_LEN - 1]);
nightseas 0:3dac4f477e98 56 #endif
nightseas 0:3dac4f477e98 57 return -1;
nightseas 0:3dac4f477e98 58 }
nightseas 0:3dac4f477e98 59 }
nightseas 0:3dac4f477e98 60
nightseas 0:3dac4f477e98 61 uint8_t ZE08_CalCheckSum(uint8_t *packet)
nightseas 0:3dac4f477e98 62 {
nightseas 0:3dac4f477e98 63 uint8_t i, checksum = 0;
nightseas 0:3dac4f477e98 64 for( i = 1; i < 8; i++)
nightseas 0:3dac4f477e98 65 {
nightseas 0:3dac4f477e98 66 checksum += packet[i];
nightseas 0:3dac4f477e98 67 }
nightseas 0:3dac4f477e98 68 checksum = 0xff - checksum;
nightseas 0:3dac4f477e98 69 checksum += 1;
nightseas 0:3dac4f477e98 70 return checksum;
nightseas 0:3dac4f477e98 71 }