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BMS I/Fプログラム
main.cpp
- Committer:
- NT32
- Date:
- 2016-04-29
- Revision:
- 4:c5b0a318c84d
- Parent:
- 3:8607d7ab7f25
- Child:
- 5:8076127d0690
File content as of revision 4:c5b0a318c84d:
#include "mbed.h" #include "LTC6803.h" #define BMS_NUM 2 DigitalOut myled(LED1); SPI spi(dp2, dp1, dp6); // mosi, miso, sclk DigitalOut cs(dp4); Serial pc(dp16, dp15); unsigned char CalcCRCLTC6803(unsigned char * dat, unsigned char numdat); static unsigned char crc8_table[256]; // 8-bit table for PEC calc static int made_table = 0; // table made flag unsigned char packet[18]={0}; // used for PEC calc unsigned char PECbyte; // PEC of a byte unsigned char PECpacket; // PEC of packet unsigned char PECpacketREAD; // value that PECpacket should be as read from 6803 static void init_crc8(); void setPECbyte(unsigned char m); void setPECpacket(unsigned char np); static void init_crc8() { int z,j; unsigned char cr; if (!made_table) { for (z = 0; z < 256; z ++) { cr = z; for (j = 0; j < 8; j ++) { cr = (cr << 1) ^ ((cr & 0x80) ? 0x07 : 0); } crc8_table[z] = cr & 0xFF; } made_table = 1; } } void setPECbyte(unsigned char m) { PECbyte = 0x41; // initialize PECbyte if (!made_table) { init_crc8(); } PECbyte = crc8_table[(PECbyte) ^ m]; } void setPECpacket(unsigned char np) { // np is number of bytes currently in packet[] int z; PECpacket = 0x41; // initialize PECpacket if (!made_table) { init_crc8(); } for (z = 0; z < np; z ++) { PECpacket = crc8_table[(PECpacket) ^ packet[z]]; } } unsigned char CalcCRCLTC6803(unsigned char * dat, unsigned char numdat){ unsigned char pec; char loop, outerloop; datainput in; in.byte = 0; pec = CRCDEFAULT; for(outerloop = 0; outerloop < numdat; outerloop++){ for(loop = 8; loop > 0; loop--){ in.in.b0 = (dat[outerloop] >> (loop - 1)) ^ ((pec >> 7)); in.in.b1 = in.in.b0 ^ (pec); in.in.b2 = in.in.b0 ^ (pec >> 1); pec = pec << 1; pec = (pec & 0xF8) | (in.byte & 0x07); } } return pec; } int main() { unsigned char cmd, tmp, datnum, getpec; unsigned char dat[16], getdat[18][BMS_NUM]; // float cellvol[4]; int cellvol[12][BMS_NUM]; int cellallvol; char str[32]; cs = 1; spi.format(8,3); spi.frequency(500000); pc.baud(460800); cs = 0; cmd = WRCFG; spi.write(cmd); spi.write(CalcCRCLTC6803(&cmd, 1)); dat[0] = 0x02; dat[1] = 0x00; dat[2] = 0x00; dat[3] = 0xff; dat[4] = 42; dat[5] = 255; for(int loop = 0;loop < 6; loop++){ spi.write(dat[loop]); } cmd = CalcCRCLTC6803(dat, 6); spi.write(cmd); for(int loop = 0;loop < 6; loop++){ spi.write(dat[loop]); } cmd = CalcCRCLTC6803(dat, 6); spi.write(cmd); cs = 1; wait(0.001); while(1) { cs = 0; cmd = RDCV; spi.write(cmd); spi.write(CalcCRCLTC6803(&cmd, 1)); for(int cell = 0;cell < 18; cell++){ getdat[cell][0] = spi.write(0); } getpec = spi.write(0); for(int cell = 0;cell < 18; cell++){ getdat[cell][1] = spi.write(0); } getpec = spi.write(0); cs = 1; wait(0.001); cs = 0; pc.printf("\033[2J"); pc.printf("\033[%d;%dH" , 0, 0); cellallvol = 0; for(int bms = 0; bms < BMS_NUM; bms++){ cellvol[0][bms] = (((getdat[1][bms] & 0x0f) << 8) | getdat[0][bms]); cellvol[1][bms] = ((getdat[2][bms] << 4) | ((getdat[1][bms] & 0xf0) >> 4)); cellvol[2][bms] = (((getdat[4][bms] & 0x0f) << 8) | getdat[3][bms]); cellvol[3][bms] = ((getdat[5][bms] << 4) | ((getdat[4][bms] & 0xf0) >> 4)); cellvol[4][bms] = (((getdat[7][bms] & 0x0f) << 8) | getdat[6][bms]); cellvol[5][bms] = ((getdat[8][bms] << 4) | ((getdat[7][bms] & 0xf0) >> 4)); cellvol[6][bms] = (((getdat[10][bms] & 0x0f) << 8) | getdat[9][bms]); cellvol[7][bms] = ((getdat[11][bms] << 4) | ((getdat[10][bms] & 0xf0) >> 4)); cellvol[8][bms] = (((getdat[13][bms] & 0x0f) << 8) | getdat[12][bms]); cellvol[9][bms] = ((getdat[14][bms] << 4) | ((getdat[13][bms] & 0xf0) >> 4)); cellvol[10][bms] = (((getdat[16][bms] & 0x0f) << 8) | getdat[15][bms]); cellvol[11][bms] = ((getdat[17][bms] << 4) | ((getdat[16][bms] & 0xf0) >> 4)); for(int loop = 0;loop < (12); loop++){ //表示する数値は(cellvol[loop] - 512)*1.5mV pc.printf("Cell%2d = %5dmV\n", (loop + (bms*12)) + 1, ((cellvol[loop][bms] - 512)+((cellvol[loop][bms] - 512)/2))); cellallvol += cellvol[loop][bms]; } } pc.printf("CellALL = %5dmV\n", ((cellallvol - 512*(12 * BMS_NUM))+((cellallvol - 512*(12 * BMS_NUM))/2))); cmd = STCVADSELF1; spi.write(cmd); spi.write(CalcCRCLTC6803(&cmd, 1)); cs = 1; myled = !myled; wait(0.4); } }