Rick McConney
/
stripReader
Proximity strip reader
Fork of StarterKit by
main.cpp@1:af7a42f7d465, 2016-07-09 (annotated)
- Committer:
- JMF
- Date:
- Sat Jul 09 00:45:53 2016 +0000
- Revision:
- 1:af7a42f7d465
- Parent:
- 0:9d5134074d84
- Child:
- 2:0e2ef866af95
Adding string encode/decode;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JMF | 0:9d5134074d84 | 1 | #include "mbed.h" |
JMF | 0:9d5134074d84 | 2 | #include <cctype> |
JMF | 0:9d5134074d84 | 3 | #include <string> |
JMF | 0:9d5134074d84 | 4 | #include "SerialBuffered.h" |
JMF | 0:9d5134074d84 | 5 | #include "HTS221.h" |
JMF | 0:9d5134074d84 | 6 | |
JMF | 0:9d5134074d84 | 7 | // comment out the following line if color is not supported on the terminal |
JMF | 0:9d5134074d84 | 8 | #define USE_COLOR |
JMF | 0:9d5134074d84 | 9 | #ifdef USE_COLOR |
JMF | 0:9d5134074d84 | 10 | #define BLK "\033[30m" |
JMF | 0:9d5134074d84 | 11 | #define RED "\033[31m" |
JMF | 0:9d5134074d84 | 12 | #define GRN "\033[32m" |
JMF | 0:9d5134074d84 | 13 | #define YEL "\033[33m" |
JMF | 0:9d5134074d84 | 14 | #define BLU "\033[34m" |
JMF | 0:9d5134074d84 | 15 | #define MAG "\033[35m" |
JMF | 0:9d5134074d84 | 16 | #define CYN "\033[36m" |
JMF | 0:9d5134074d84 | 17 | #define WHT "\033[37m" |
JMF | 0:9d5134074d84 | 18 | #define DEF "\033[39m" |
JMF | 0:9d5134074d84 | 19 | #else |
JMF | 0:9d5134074d84 | 20 | #define BLK |
JMF | 0:9d5134074d84 | 21 | #define RED |
JMF | 0:9d5134074d84 | 22 | #define GRN |
JMF | 0:9d5134074d84 | 23 | #define YEL |
JMF | 0:9d5134074d84 | 24 | #define BLU |
JMF | 0:9d5134074d84 | 25 | #define MAG |
JMF | 0:9d5134074d84 | 26 | #define CYN |
JMF | 0:9d5134074d84 | 27 | #define WHT |
JMF | 0:9d5134074d84 | 28 | #define DEF |
JMF | 0:9d5134074d84 | 29 | #endif |
JMF | 0:9d5134074d84 | 30 | |
JMF | 0:9d5134074d84 | 31 | #define MDM_DBG_OFF 0 |
JMF | 0:9d5134074d84 | 32 | #define MDM_DBG_AT_CMDS (1 << 0) |
JMF | 0:9d5134074d84 | 33 | int mdm_dbgmask = MDM_DBG_OFF; |
JMF | 0:9d5134074d84 | 34 | |
JMF | 0:9d5134074d84 | 35 | Serial pc(USBTX, USBRX); |
JMF | 0:9d5134074d84 | 36 | SerialBuffered mdm(PTD3, PTD2, 128); |
JMF | 0:9d5134074d84 | 37 | DigitalOut led_red(LED_RED); |
JMF | 0:9d5134074d84 | 38 | DigitalOut led_green(LED_GREEN); |
JMF | 0:9d5134074d84 | 39 | |
JMF | 0:9d5134074d84 | 40 | DigitalOut mdm_uart2_rx_boot_mode_sel(PTC17); // on powerup, 0 = boot mode, 1 = normal boot |
JMF | 0:9d5134074d84 | 41 | DigitalOut mdm_power_on(PTB9); // 0 = turn modem on, 1 = turn modem off (should be held high for >5 seconds to cycle modem) |
JMF | 0:9d5134074d84 | 42 | DigitalOut mdm_wakeup_in(PTC2); // 0 = let modem sleep, 1 = keep modem awake -- Note: pulled high on shield |
JMF | 0:9d5134074d84 | 43 | |
JMF | 0:9d5134074d84 | 44 | DigitalOut shield_3v3_1v8_sig_trans_ena(PTC4); // 0 = disabled (all signals high impedence, 1 = translation active |
JMF | 0:9d5134074d84 | 45 | DigitalOut mdm_uart1_cts(PTD0); |
JMF | 0:9d5134074d84 | 46 | |
JMF | 0:9d5134074d84 | 47 | #define TOUPPER(a) (a) //toupper(a) |
JMF | 0:9d5134074d84 | 48 | |
JMF | 0:9d5134074d84 | 49 | const char ok_str[] = "OK"; |
JMF | 0:9d5134074d84 | 50 | const char error_str[] = "ERROR"; |
JMF | 0:9d5134074d84 | 51 | |
JMF | 0:9d5134074d84 | 52 | #define MDM_OK 0 |
JMF | 0:9d5134074d84 | 53 | #define MDM_ERR_TIMEOUT -1 |
JMF | 0:9d5134074d84 | 54 | |
JMF | 0:9d5134074d84 | 55 | #define MAX_AT_RSP_LEN 255 |
JMF | 0:9d5134074d84 | 56 | |
JMF | 0:9d5134074d84 | 57 | // |
JMF | 0:9d5134074d84 | 58 | // The modem will return strings of HEX encoded data. This function takes |
JMF | 0:9d5134074d84 | 59 | // a pointer to a string of HEX ASCII data and converts it into a string |
JMF | 0:9d5134074d84 | 60 | // of ASCII data. It takes a pointer to the string of HEX ASCII data and |
JMF | 0:9d5134074d84 | 61 | // a pointer to the destination string. It returns the number of characters |
JMF | 0:9d5134074d84 | 62 | // it converted. |
JMF | 0:9d5134074d84 | 63 | // |
JMF | 0:9d5134074d84 | 64 | int DecodeASCIIstr(string& ins, string& outs) { |
JMF | 0:9d5134074d84 | 65 | int val, n = 0; |
JMF | 1:af7a42f7d465 | 66 | char ts[] = {0,0,0}; |
JMF | 0:9d5134074d84 | 67 | |
JMF | 0:9d5134074d84 | 68 | while(n<ins.length()) { |
JMF | 1:af7a42f7d465 | 69 | ts[0] = ins[n]; |
JMF | 1:af7a42f7d465 | 70 | ts[1] = ins[n+1]; |
JMF | 1:af7a42f7d465 | 71 | sscanf(ts,"%X",&val); |
JMF | 0:9d5134074d84 | 72 | sprintf(ts,"%c",val); |
JMF | 0:9d5134074d84 | 73 | outs.append(ts); |
JMF | 0:9d5134074d84 | 74 | n += 2; |
JMF | 0:9d5134074d84 | 75 | } |
JMF | 0:9d5134074d84 | 76 | return outs.length(); |
JMF | 0:9d5134074d84 | 77 | } |
JMF | 0:9d5134074d84 | 78 | |
JMF | 0:9d5134074d84 | 79 | |
JMF | 0:9d5134074d84 | 80 | // |
JMF | 0:9d5134074d84 | 81 | // Modem expects data to be passed to it in the form of HEX encoded strings. This |
JMF | 0:9d5134074d84 | 82 | // function takes a pointer to a users supplied ASCII string, and converts it into |
JMF | 0:9d5134074d84 | 83 | // an ASCII string of equivelent HEX numbers encoded as a string. The function takes |
JMF | 0:9d5134074d84 | 84 | // a pointer to the users input string, and a pointer to the output string. The |
JMF | 0:9d5134074d84 | 85 | // function returns the number of characters converted or 0 if an error occurs or more |
JMF | 0:9d5134074d84 | 86 | // than 750 characters were converted. The 750 chacter limit is because the modem |
JMF | 0:9d5134074d84 | 87 | // will only accept up to 1500 characters, and the converted srings will be 2x the |
JMF | 0:9d5134074d84 | 88 | // input string since the hex representation of 1 character is a two digit hex value. |
JMF | 0:9d5134074d84 | 89 | // |
JMF | 1:af7a42f7d465 | 90 | int CreateASCIIstr(string& ins, string& outs) { |
JMF | 0:9d5134074d84 | 91 | int i = 0; |
JMF | 0:9d5134074d84 | 92 | char ts[3]; |
JMF | 1:af7a42f7d465 | 93 | |
JMF | 1:af7a42f7d465 | 94 | if( ins.length() > 749 ) |
JMF | 0:9d5134074d84 | 95 | return 0; |
JMF | 0:9d5134074d84 | 96 | |
JMF | 1:af7a42f7d465 | 97 | while(ins[i] != 0x00) { |
JMF | 1:af7a42f7d465 | 98 | sprintf(ts,"%02X", ins[i]); |
JMF | 1:af7a42f7d465 | 99 | outs.append(ts); |
JMF | 0:9d5134074d84 | 100 | i++; |
JMF | 0:9d5134074d84 | 101 | } |
JMF | 1:af7a42f7d465 | 102 | return outs.length(); |
JMF | 0:9d5134074d84 | 103 | } |
JMF | 0:9d5134074d84 | 104 | |
JMF | 0:9d5134074d84 | 105 | |
JMF | 0:9d5134074d84 | 106 | |
JMF | 0:9d5134074d84 | 107 | ssize_t mdm_getline(char *buff, size_t size, int timeout_ms) { |
JMF | 0:9d5134074d84 | 108 | int cin = -1; |
JMF | 0:9d5134074d84 | 109 | int cin_last; |
JMF | 0:9d5134074d84 | 110 | |
JMF | 0:9d5134074d84 | 111 | if (NULL == buff || size == 0) { |
JMF | 0:9d5134074d84 | 112 | return -1; |
JMF | 0:9d5134074d84 | 113 | } |
JMF | 0:9d5134074d84 | 114 | |
JMF | 0:9d5134074d84 | 115 | size_t len = 0; |
JMF | 0:9d5134074d84 | 116 | Timer timer; |
JMF | 0:9d5134074d84 | 117 | timer.start(); |
JMF | 0:9d5134074d84 | 118 | while ((len < (size-1)) && (timer.read_ms() < timeout_ms)) { |
JMF | 0:9d5134074d84 | 119 | if (mdm.readable()) { |
JMF | 0:9d5134074d84 | 120 | cin_last = cin; |
JMF | 0:9d5134074d84 | 121 | cin = mdm.getc(); |
JMF | 0:9d5134074d84 | 122 | if (isprint(cin)) { |
JMF | 0:9d5134074d84 | 123 | buff[len++] = (char)cin; |
JMF | 0:9d5134074d84 | 124 | continue; |
JMF | 0:9d5134074d84 | 125 | } else if (('\r' == cin_last) && ('\n' == cin)) { |
JMF | 0:9d5134074d84 | 126 | break; |
JMF | 0:9d5134074d84 | 127 | } |
JMF | 0:9d5134074d84 | 128 | } |
JMF | 0:9d5134074d84 | 129 | wait_ms(1); |
JMF | 0:9d5134074d84 | 130 | } |
JMF | 0:9d5134074d84 | 131 | buff[len] = NULL; |
JMF | 0:9d5134074d84 | 132 | |
JMF | 0:9d5134074d84 | 133 | return len; |
JMF | 0:9d5134074d84 | 134 | } |
JMF | 0:9d5134074d84 | 135 | |
JMF | 0:9d5134074d84 | 136 | int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) { |
JMF | 0:9d5134074d84 | 137 | if (cmd && strlen(cmd) > 0) { |
JMF | 0:9d5134074d84 | 138 | if (mdm_dbgmask & MDM_DBG_AT_CMDS) { |
JMF | 0:9d5134074d84 | 139 | printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd); |
JMF | 0:9d5134074d84 | 140 | } |
JMF | 0:9d5134074d84 | 141 | mdm.printf("%s\r\n", cmd); |
JMF | 0:9d5134074d84 | 142 | } |
JMF | 0:9d5134074d84 | 143 | |
JMF | 0:9d5134074d84 | 144 | if (rsp_list) { |
JMF | 0:9d5134074d84 | 145 | Timer timer; |
JMF | 0:9d5134074d84 | 146 | char rsp[MAX_AT_RSP_LEN+1]; |
JMF | 0:9d5134074d84 | 147 | int len; |
JMF | 0:9d5134074d84 | 148 | |
JMF | 0:9d5134074d84 | 149 | timer.start(); |
JMF | 0:9d5134074d84 | 150 | while (timer.read_ms() < timeout_ms) { |
JMF | 0:9d5134074d84 | 151 | len = mdm_getline(rsp, sizeof(rsp), timeout_ms - timer.read_ms()); |
JMF | 0:9d5134074d84 | 152 | |
JMF | 0:9d5134074d84 | 153 | if (len < 0) |
JMF | 0:9d5134074d84 | 154 | return MDM_ERR_TIMEOUT; |
JMF | 0:9d5134074d84 | 155 | |
JMF | 0:9d5134074d84 | 156 | if (len == 0) |
JMF | 0:9d5134074d84 | 157 | continue; |
JMF | 0:9d5134074d84 | 158 | |
JMF | 0:9d5134074d84 | 159 | if (mdm_dbgmask & MDM_DBG_AT_CMDS) { |
JMF | 0:9d5134074d84 | 160 | printf(MAG "ATRSP: " DEF "<-- " CYN "%s" DEF "\n", rsp); |
JMF | 0:9d5134074d84 | 161 | } |
JMF | 0:9d5134074d84 | 162 | |
JMF | 0:9d5134074d84 | 163 | if (rsp_list) { |
JMF | 0:9d5134074d84 | 164 | int rsp_idx = 0; |
JMF | 0:9d5134074d84 | 165 | while (rsp_list[rsp_idx]) { |
JMF | 0:9d5134074d84 | 166 | if (strcasecmp(rsp, rsp_list[rsp_idx]) == 0) { |
JMF | 0:9d5134074d84 | 167 | return rsp_idx; |
JMF | 0:9d5134074d84 | 168 | } |
JMF | 0:9d5134074d84 | 169 | rsp_idx++; |
JMF | 0:9d5134074d84 | 170 | } |
JMF | 0:9d5134074d84 | 171 | } |
JMF | 0:9d5134074d84 | 172 | } |
JMF | 0:9d5134074d84 | 173 | return MDM_ERR_TIMEOUT; |
JMF | 0:9d5134074d84 | 174 | } |
JMF | 0:9d5134074d84 | 175 | return MDM_OK; |
JMF | 0:9d5134074d84 | 176 | } |
JMF | 0:9d5134074d84 | 177 | |
JMF | 0:9d5134074d84 | 178 | int mdm_init(void) { |
JMF | 0:9d5134074d84 | 179 | // disable signal level translator |
JMF | 0:9d5134074d84 | 180 | shield_3v3_1v8_sig_trans_ena = 0; |
JMF | 0:9d5134074d84 | 181 | |
JMF | 0:9d5134074d84 | 182 | // power modem on //off |
JMF | 0:9d5134074d84 | 183 | mdm_power_on = 0; //1; |
JMF | 0:9d5134074d84 | 184 | |
JMF | 0:9d5134074d84 | 185 | // insure modem boots into normal operating mode |
JMF | 0:9d5134074d84 | 186 | // and does not go to sleep when powered on |
JMF | 0:9d5134074d84 | 187 | mdm_uart2_rx_boot_mode_sel = 1; |
JMF | 0:9d5134074d84 | 188 | mdm_wakeup_in = 1; |
JMF | 0:9d5134074d84 | 189 | |
JMF | 0:9d5134074d84 | 190 | // initialze comm with the modem |
JMF | 0:9d5134074d84 | 191 | mdm.baud(115200); |
JMF | 0:9d5134074d84 | 192 | mdm_uart1_cts = 0; |
JMF | 0:9d5134074d84 | 193 | |
JMF | 0:9d5134074d84 | 194 | // enable the signal level translator to start |
JMF | 0:9d5134074d84 | 195 | // modem reset process (modem will be powered down) |
JMF | 0:9d5134074d84 | 196 | shield_3v3_1v8_sig_trans_ena = 1; |
JMF | 0:9d5134074d84 | 197 | |
JMF | 0:9d5134074d84 | 198 | // Give the modem 60 secons to start responding by |
JMF | 0:9d5134074d84 | 199 | // sending simple 'AT' commands to modem once per second. |
JMF | 0:9d5134074d84 | 200 | Timer timer; |
JMF | 0:9d5134074d84 | 201 | timer.start(); |
JMF | 0:9d5134074d84 | 202 | while (timer.read() < 60) { |
JMF | 0:9d5134074d84 | 203 | const char * rsp_lst[] = { ok_str, error_str, NULL }; |
JMF | 0:9d5134074d84 | 204 | int rc = mdm_sendAtCmd("AT", rsp_lst, 500); |
JMF | 0:9d5134074d84 | 205 | if (rc == 0) |
JMF | 0:9d5134074d84 | 206 | return timer.read(); |
JMF | 0:9d5134074d84 | 207 | wait_ms(1000 - (timer.read_ms() % 1000)); |
JMF | 0:9d5134074d84 | 208 | pc.printf("\r%d",timer.read_ms()/1000); |
JMF | 0:9d5134074d84 | 209 | } |
JMF | 0:9d5134074d84 | 210 | return false; |
JMF | 0:9d5134074d84 | 211 | } |
JMF | 0:9d5134074d84 | 212 | |
JMF | 0:9d5134074d84 | 213 | #define CTOF(x) ((x)*1.8+32) |
JMF | 0:9d5134074d84 | 214 | |
JMF | 0:9d5134074d84 | 215 | int main() { |
JMF | 0:9d5134074d84 | 216 | HTS221 hts221; |
JMF | 0:9d5134074d84 | 217 | pc.baud(115200); |
JMF | 0:9d5134074d84 | 218 | int i, |
JMF | 0:9d5134074d84 | 219 | CreateASCIIstr(string& in, string& out), |
JMF | 0:9d5134074d84 | 220 | DecodeASCIIstr(string& ins, string& outs); |
JMF | 0:9d5134074d84 | 221 | string ins, outs; |
JMF | 0:9d5134074d84 | 222 | |
JMF | 0:9d5134074d84 | 223 | void hts221_init(void); |
JMF | 0:9d5134074d84 | 224 | |
JMF | 1:af7a42f7d465 | 225 | pc.printf(BLU "Hello World from AT&T Shape!\r\n\n\r"); |
JMF | 0:9d5134074d84 | 226 | pc.printf(GRN "Initialize the HTS221\n\r"); |
JMF | 0:9d5134074d84 | 227 | |
JMF | 0:9d5134074d84 | 228 | i = hts221.begin(); |
JMF | 0:9d5134074d84 | 229 | if( i ) |
JMF | 0:9d5134074d84 | 230 | pc.printf(BLU "HTS221 Detected! (0x%02X)\n\r",i); |
JMF | 0:9d5134074d84 | 231 | else |
JMF | 0:9d5134074d84 | 232 | pc.printf(RED "HTS221 NOT DETECTED!!\n\r"); |
JMF | 0:9d5134074d84 | 233 | |
JMF | 0:9d5134074d84 | 234 | printf("Temp is: %0.2f F \n\r",CTOF(hts221.readTemperature())); |
JMF | 0:9d5134074d84 | 235 | printf("Humid is: %02d %%\n\r",hts221.readHumidity()); |
JMF | 1:af7a42f7d465 | 236 | |
JMF | 1:af7a42f7d465 | 237 | string newstr, outstr, instr = "0123456789aAbBcCdDeEfFxXyYzZ"; |
JMF | 1:af7a42f7d465 | 238 | pc.printf("\n\rTest ASCII String creation: \n\r"); |
JMF | 1:af7a42f7d465 | 239 | i = CreateASCIIstr(instr,outstr); |
JMF | 1:af7a42f7d465 | 240 | pc.printf(">Initially the string is '%s' (%d long)\n\r>after encode it is '%s' (%d characters long).\n\r", |
JMF | 1:af7a42f7d465 | 241 | instr.c_str(),instr.length(),outstr.c_str(),i); |
JMF | 1:af7a42f7d465 | 242 | i = DecodeASCIIstr(outstr, newstr); |
JMF | 1:af7a42f7d465 | 243 | pc.printf(">after decoding the encoded string, it is '%s' (%d long)\n\r\n\r",newstr.c_str(),i); |
JMF | 1:af7a42f7d465 | 244 | |
JMF | 0:9d5134074d84 | 245 | |
JMF | 0:9d5134074d84 | 246 | // Initialize the modem |
JMF | 0:9d5134074d84 | 247 | printf(GRN "Modem initializing... will take up to 60 seconds" DEF "\r\n"); |
JMF | 0:9d5134074d84 | 248 | i=mdm_init(); |
JMF | 0:9d5134074d84 | 249 | if (!i) { |
JMF | 0:9d5134074d84 | 250 | pc.printf(RED "Modem initialization failed!" DEF "\n"); |
JMF | 0:9d5134074d84 | 251 | while (1); |
JMF | 0:9d5134074d84 | 252 | } |
JMF | 0:9d5134074d84 | 253 | |
JMF | 0:9d5134074d84 | 254 | // Now that the modem is up and running, transfer characters |
JMF | 0:9d5134074d84 | 255 | // between the pc terminal and the modem to give the user |
JMF | 0:9d5134074d84 | 256 | // a virtual terminal to the modem. |
JMF | 0:9d5134074d84 | 257 | pc.printf(YEL "\rAT command interface ready, completed in %d seconds. You may now type AT commands" DEF "\r\n",i); |
JMF | 0:9d5134074d84 | 258 | |
JMF | 0:9d5134074d84 | 259 | while(1) { |
JMF | 0:9d5134074d84 | 260 | if(pc.readable()) { |
JMF | 0:9d5134074d84 | 261 | char char_in = TOUPPER(pc.getc()); |
JMF | 0:9d5134074d84 | 262 | |
JMF | 0:9d5134074d84 | 263 | static char last_char_in = 0; |
JMF | 0:9d5134074d84 | 264 | |
JMF | 0:9d5134074d84 | 265 | if (('\r' == char_in) || ('\n' == char_in)) |
JMF | 0:9d5134074d84 | 266 | { |
JMF | 0:9d5134074d84 | 267 | if (('\r' == char_in) || ('\r' != last_char_in)) |
JMF | 0:9d5134074d84 | 268 | { |
JMF | 0:9d5134074d84 | 269 | mdm.puts("\r\n"); |
JMF | 0:9d5134074d84 | 270 | } |
JMF | 0:9d5134074d84 | 271 | } |
JMF | 0:9d5134074d84 | 272 | else |
JMF | 0:9d5134074d84 | 273 | { |
JMF | 0:9d5134074d84 | 274 | pc.putc(char_in); |
JMF | 0:9d5134074d84 | 275 | mdm.putc(char_in); |
JMF | 0:9d5134074d84 | 276 | } |
JMF | 0:9d5134074d84 | 277 | last_char_in = char_in; |
JMF | 0:9d5134074d84 | 278 | } |
JMF | 0:9d5134074d84 | 279 | if(mdm.readable()) { |
JMF | 0:9d5134074d84 | 280 | char ser_char = mdm.getc(); |
JMF | 0:9d5134074d84 | 281 | pc.putc(ser_char); |
JMF | 0:9d5134074d84 | 282 | } |
JMF | 0:9d5134074d84 | 283 | } |
JMF | 0:9d5134074d84 | 284 | } |