Rick McConney
/
stripReader
Proximity strip reader
Fork of StarterKit by
main.cpp
- Committer:
- JMF
- Date:
- 2016-07-09
- Revision:
- 1:af7a42f7d465
- Parent:
- 0:9d5134074d84
- Child:
- 2:0e2ef866af95
File content as of revision 1:af7a42f7d465:
#include "mbed.h" #include <cctype> #include <string> #include "SerialBuffered.h" #include "HTS221.h" // comment out the following line if color is not supported on the terminal #define USE_COLOR #ifdef USE_COLOR #define BLK "\033[30m" #define RED "\033[31m" #define GRN "\033[32m" #define YEL "\033[33m" #define BLU "\033[34m" #define MAG "\033[35m" #define CYN "\033[36m" #define WHT "\033[37m" #define DEF "\033[39m" #else #define BLK #define RED #define GRN #define YEL #define BLU #define MAG #define CYN #define WHT #define DEF #endif #define MDM_DBG_OFF 0 #define MDM_DBG_AT_CMDS (1 << 0) int mdm_dbgmask = MDM_DBG_OFF; Serial pc(USBTX, USBRX); SerialBuffered mdm(PTD3, PTD2, 128); DigitalOut led_red(LED_RED); DigitalOut led_green(LED_GREEN); DigitalOut mdm_uart2_rx_boot_mode_sel(PTC17); // on powerup, 0 = boot mode, 1 = normal boot DigitalOut mdm_power_on(PTB9); // 0 = turn modem on, 1 = turn modem off (should be held high for >5 seconds to cycle modem) DigitalOut mdm_wakeup_in(PTC2); // 0 = let modem sleep, 1 = keep modem awake -- Note: pulled high on shield DigitalOut shield_3v3_1v8_sig_trans_ena(PTC4); // 0 = disabled (all signals high impedence, 1 = translation active DigitalOut mdm_uart1_cts(PTD0); #define TOUPPER(a) (a) //toupper(a) const char ok_str[] = "OK"; const char error_str[] = "ERROR"; #define MDM_OK 0 #define MDM_ERR_TIMEOUT -1 #define MAX_AT_RSP_LEN 255 // // The modem will return strings of HEX encoded data. This function takes // a pointer to a string of HEX ASCII data and converts it into a string // of ASCII data. It takes a pointer to the string of HEX ASCII data and // a pointer to the destination string. It returns the number of characters // it converted. // int DecodeASCIIstr(string& ins, string& outs) { int val, n = 0; char ts[] = {0,0,0}; while(n<ins.length()) { ts[0] = ins[n]; ts[1] = ins[n+1]; sscanf(ts,"%X",&val); sprintf(ts,"%c",val); outs.append(ts); n += 2; } return outs.length(); } // // Modem expects data to be passed to it in the form of HEX encoded strings. This // function takes a pointer to a users supplied ASCII string, and converts it into // an ASCII string of equivelent HEX numbers encoded as a string. The function takes // a pointer to the users input string, and a pointer to the output string. The // function returns the number of characters converted or 0 if an error occurs or more // than 750 characters were converted. The 750 chacter limit is because the modem // will only accept up to 1500 characters, and the converted srings will be 2x the // input string since the hex representation of 1 character is a two digit hex value. // int CreateASCIIstr(string& ins, string& outs) { int i = 0; char ts[3]; if( ins.length() > 749 ) return 0; while(ins[i] != 0x00) { sprintf(ts,"%02X", ins[i]); outs.append(ts); i++; } return outs.length(); } ssize_t mdm_getline(char *buff, size_t size, int timeout_ms) { int cin = -1; int cin_last; if (NULL == buff || size == 0) { return -1; } size_t len = 0; Timer timer; timer.start(); while ((len < (size-1)) && (timer.read_ms() < timeout_ms)) { if (mdm.readable()) { cin_last = cin; cin = mdm.getc(); if (isprint(cin)) { buff[len++] = (char)cin; continue; } else if (('\r' == cin_last) && ('\n' == cin)) { break; } } wait_ms(1); } buff[len] = NULL; return len; } int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) { if (cmd && strlen(cmd) > 0) { if (mdm_dbgmask & MDM_DBG_AT_CMDS) { printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd); } mdm.printf("%s\r\n", cmd); } if (rsp_list) { Timer timer; char rsp[MAX_AT_RSP_LEN+1]; int len; timer.start(); while (timer.read_ms() < timeout_ms) { len = mdm_getline(rsp, sizeof(rsp), timeout_ms - timer.read_ms()); if (len < 0) return MDM_ERR_TIMEOUT; if (len == 0) continue; if (mdm_dbgmask & MDM_DBG_AT_CMDS) { printf(MAG "ATRSP: " DEF "<-- " CYN "%s" DEF "\n", rsp); } if (rsp_list) { int rsp_idx = 0; while (rsp_list[rsp_idx]) { if (strcasecmp(rsp, rsp_list[rsp_idx]) == 0) { return rsp_idx; } rsp_idx++; } } } return MDM_ERR_TIMEOUT; } return MDM_OK; } int mdm_init(void) { // disable signal level translator shield_3v3_1v8_sig_trans_ena = 0; // power modem on //off mdm_power_on = 0; //1; // insure modem boots into normal operating mode // and does not go to sleep when powered on mdm_uart2_rx_boot_mode_sel = 1; mdm_wakeup_in = 1; // initialze comm with the modem mdm.baud(115200); mdm_uart1_cts = 0; // enable the signal level translator to start // modem reset process (modem will be powered down) shield_3v3_1v8_sig_trans_ena = 1; // Give the modem 60 secons to start responding by // sending simple 'AT' commands to modem once per second. Timer timer; timer.start(); while (timer.read() < 60) { const char * rsp_lst[] = { ok_str, error_str, NULL }; int rc = mdm_sendAtCmd("AT", rsp_lst, 500); if (rc == 0) return timer.read(); wait_ms(1000 - (timer.read_ms() % 1000)); pc.printf("\r%d",timer.read_ms()/1000); } return false; } #define CTOF(x) ((x)*1.8+32) int main() { HTS221 hts221; pc.baud(115200); int i, CreateASCIIstr(string& in, string& out), DecodeASCIIstr(string& ins, string& outs); string ins, outs; void hts221_init(void); pc.printf(BLU "Hello World from AT&T Shape!\r\n\n\r"); pc.printf(GRN "Initialize the HTS221\n\r"); i = hts221.begin(); if( i ) pc.printf(BLU "HTS221 Detected! (0x%02X)\n\r",i); else pc.printf(RED "HTS221 NOT DETECTED!!\n\r"); printf("Temp is: %0.2f F \n\r",CTOF(hts221.readTemperature())); printf("Humid is: %02d %%\n\r",hts221.readHumidity()); string newstr, outstr, instr = "0123456789aAbBcCdDeEfFxXyYzZ"; pc.printf("\n\rTest ASCII String creation: \n\r"); i = CreateASCIIstr(instr,outstr); pc.printf(">Initially the string is '%s' (%d long)\n\r>after encode it is '%s' (%d characters long).\n\r", instr.c_str(),instr.length(),outstr.c_str(),i); i = DecodeASCIIstr(outstr, newstr); pc.printf(">after decoding the encoded string, it is '%s' (%d long)\n\r\n\r",newstr.c_str(),i); // Initialize the modem printf(GRN "Modem initializing... will take up to 60 seconds" DEF "\r\n"); i=mdm_init(); if (!i) { pc.printf(RED "Modem initialization failed!" DEF "\n"); while (1); } // Now that the modem is up and running, transfer characters // between the pc terminal and the modem to give the user // a virtual terminal to the modem. pc.printf(YEL "\rAT command interface ready, completed in %d seconds. You may now type AT commands" DEF "\r\n",i); while(1) { if(pc.readable()) { char char_in = TOUPPER(pc.getc()); static char last_char_in = 0; if (('\r' == char_in) || ('\n' == char_in)) { if (('\r' == char_in) || ('\r' != last_char_in)) { mdm.puts("\r\n"); } } else { pc.putc(char_in); mdm.putc(char_in); } last_char_in = char_in; } if(mdm.readable()) { char ser_char = mdm.getc(); pc.putc(ser_char); } } }