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A simple project for sending button input up to AT&T Flow
Dependencies: FXOS8700CQ MODSERIAL mbed
For instructions on using this program, see the AT&T Starter Kit tutorial on it.
Diff: main.cpp
- Revision:
- 61:f6b93129f954
- Parent:
- 59:7ebb9436b2bd
- Child:
- 63:90d7c69993cd
diff -r 2aa16fd02dfd -r f6b93129f954 main.cpp --- a/main.cpp Sat Jul 30 16:26:22 2016 +0000 +++ b/main.cpp Mon Aug 01 18:29:04 2016 +0000 @@ -2,271 +2,18 @@ #include <cctype> #include <string> #include "SerialBuffered.h" -#include "HTS221.h" #include "config_me.h" -#include "wnc_control.h" #include "sensors.h" - +#include "cell_modem.h" #include "hardware.h" -I2C i2c(PTC11, PTC10); //SDA, SCL -- define the I2C pins being used -// 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; - -#define WNC_WAIT_FOR_AT_CMD_MS 40 - -//Serial pc(USBTX, USBRX); +I2C i2c(PTC11, PTC10); //SDA, SCL -- define the I2C pins being used MODSERIAL pc(USBTX, USBRX, 256, 256); // tx, rx with default tx, rx buffer sizes - SerialBuffered mdm(PTD3, PTD2, 4096); DigitalOut led_green(LED_GREEN); DigitalOut led_red(LED_RED); DigitalOut led_blue(LED_BLUE); -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 mdm_reset(PTC12); // active high - -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 - -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] = (char)NULL; - - return len; -} - -int mdm_sendAtCmd(const char *cmd, const char **rsp_list, int timeout_ms) { - // Per WNC wait: - wait_ms(WNC_WAIT_FOR_AT_CMD_MS); - - if (cmd && strlen(cmd) > 0) { - if (mdm_dbgmask & MDM_DBG_AT_CMDS) { - printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd); - } - mdm.puts(cmd); - mdm.puts("\r\n"); - } - - 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) { - // Hard reset the modem (doesn't go through - // the signal level translator) - mdm_reset = 0; - - // disable signal level translator (necessary - // for the modem to boot properly). All signals - // except mdm_reset go through the level translator - // and have internal pull-up/down in the module. While - // the level translator is disabled, these pins will - // be in the correct state. - shield_3v3_1v8_sig_trans_ena = 0; - - // While the level translator is disabled and ouptut pins - // are tristated, make sure the inputs are in the same state - // as the WNC Module pins so that when the level translator is - // enabled, there are no differences. - mdm_uart2_rx_boot_mode_sel = 1; // UART2_RX should be high - mdm_power_on = 0; // powr_on should be low - mdm_wakeup_in = 1; // wake-up should be high - mdm_uart1_cts = 0; // indicate that it is ok to send - - // Now, wait for the WNC Module to perform its initial boot correctly - wait(1.0); - - // The WNC module initializes comms at 115200 8N1 so set it up - mdm.baud(115200); - - //Now, enable the level translator, the input pins should now be the - //same as how the M14A module is driving them with internal pull ups/downs. - //When enabled, there will be no changes in these 4 pins... - shield_3v3_1v8_sig_trans_ena = 1; - - // Now, give the modem 60 seconds 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 true; //timer.read(); - wait_ms(1000 - (timer.read_ms() % 1000)); - pc.printf("\r%d",timer.read_ms()/1000); - } - return false; -} - -int mdm_sendAtCmdRsp(const char *cmd, const char **rsp_list, int timeout_ms, string * rsp, int * len) { - static char cmd_buf[3200]; // Need enough room for the WNC sockreads (over 3000 chars) - size_t n = strlen(cmd); - - // Per WNC wait: - wait_ms(WNC_WAIT_FOR_AT_CMD_MS); - - if (cmd && n > 0) { - if (mdm_dbgmask & MDM_DBG_AT_CMDS) { - printf(MAG "ATCMD: " DEF "--> " GRN "%s" DEF "\n", cmd); - } -// mdm.puts(cmd); -// mdm.puts("\r\n"); - while (n--) { - mdm.putc(*cmd++); - wait_us(1000); - }; - mdm.putc('\r'); - wait_us(1000); - mdm.putc('\n'); - wait_us(1000); - } - - if (rsp_list) { - rsp->erase(); // Clean up from prior cmd response - *len = 0; - Timer timer; - timer.start(); - while (timer.read_ms() < timeout_ms) { - int lenCmd = mdm_getline(cmd_buf, sizeof(cmd_buf), timeout_ms - timer.read_ms()); - - if (lenCmd == 0) - continue; - - if (lenCmd < 0) - return MDM_ERR_TIMEOUT; - else { - *len += lenCmd; - *rsp += cmd_buf; - } - - if (mdm_dbgmask & MDM_DBG_AT_CMDS) { - printf(MAG "ATRSP: " DEF "<-- " CYN "%s" DEF "\n", cmd_buf); - } - - int rsp_idx = 0; - while (rsp_list[rsp_idx]) { - if (strcasecmp(cmd_buf, rsp_list[rsp_idx]) == 0) { - return rsp_idx; - } - rsp_idx++; - } - } - return MDM_ERR_TIMEOUT; - } - - return MDM_OK; -} - -void reinitialize_mdm(void) -{ - // Initialize the modem - printf(GRN "Modem RE-initializing..." DEF "\r\n"); - if (!mdm_init()) { - printf(RED "\n\rModem RE-initialization failed!" DEF "\n"); - } - printf("\r\n"); -} -// These are built on the fly -string MyServerIpAddress; -string MySocketData; - -// These are to be built on the fly -string my_temp; -string my_humidity; - -#define CTOF(x) ((x)*1.8+32) //******************************************************************************************************************************************** //* Create string with sensor readings that can be sent to flow as an HTTP get @@ -360,39 +107,8 @@ } //SetLedColor() //******************************************************************************************************************************************** -//* Process JSON response messages +//* Process the JSON response. In this example we are only extracting a LED color. //******************************************************************************************************************************************** -bool extract_JSON(char* search_field, char* found_string) -{ - char* beginquote; - char* endquote; - beginquote = strchr(search_field, '{'); //start of JSON - endquote = strchr(search_field, '}'); //end of JSON - if (beginquote) - { - uint16_t ifoundlen; - if (endquote) - { - ifoundlen = (uint16_t) (endquote - beginquote) + 1; - strncpy(found_string, beginquote, ifoundlen ); - found_string[ifoundlen] = 0; //null terminate - return true; - } - else - { - endquote = strchr(search_field, '\0'); //end of string... sometimes the end bracket is missing - ifoundlen = (uint16_t) (endquote - beginquote) + 1; - strncpy(found_string, beginquote, ifoundlen ); - found_string[ifoundlen] = 0; //null terminate - return false; - } - } - else - { - return false; - } -} //extract_JSON - bool parse_JSON(char* json_string) { char* beginquote; @@ -458,108 +174,48 @@ } //parse_JSON int main() { - int i; - HTS221 hts221; - pc.baud(115200); - - void hts221_init(void); - - // Set LED to RED until init finishes - SetLedColor(0x1); + static unsigned ledOnce = 0; - pc.printf(BLU "Hello World from the Cellular IoT Kit!\r\n\n\r"); - pc.printf(GRN "Initialize the HTS221\n\r"); + pc.baud(115200); + pc.printf(GRN "Hello World from the Cellular IoT Kit!\r\n\r\n"); - 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()); - + //Initialize the I2C sensors that are present sensors_init(); read_sensors(); + // Set LED to RED until init finishes + SetLedColor(0x1); //Red // Initialize the modem - printf(GRN "Modem initializing... will take up to 60 seconds" DEF "\r\n"); - do { - i=mdm_init(); - if (!i) { - pc.printf(RED "Modem initialization failed!" DEF "\n"); - } - } while (!i); - - //Software init - software_init_mdm(); - - // Resolve URL to IP address to connect to - resolve_mdm(); + pc.printf("\r\n"); + cell_modem_init(); + // Set LED BLUE for partial init + SetLedColor(0x4); //Blue //Create a 1ms timer tick function: + iTimer1Interval_ms = SENSOR_UPDATE_INTERVAL_MS; OneMsTicker.attach(OneMsFunction, 0.001f) ; - iTimer1Interval_ms = SENSOR_UPDATE_INTERVAL_MS; - - // Open the socket (connect to the server) - sockopen_mdm(); - - // Set LED BLUE for partial init - SetLedColor(0x4); - // Send and receive data perpetually while(1) { - static unsigned ledOnce = 0; #ifdef USE_VIRTUAL_SENSORS ProcessUsbInterface(); #endif if (bTimerExpiredFlag) { bTimerExpiredFlag = false; - puts("HTS221 START\r\n"); - sprintf(SENSOR_DATA.Temperature, "%0.2f", CTOF(hts221.readTemperature())); - sprintf(SENSOR_DATA.Humidity, "%02d", hts221.readHumidity()); - puts("READ OTHER SENSORS START\r\n"); read_sensors(); //read available external sensors from a PMOD and the on-board motion sensor char modem_string[512]; - puts("GENERATE MODEM STRING\r\n"); GenerateModemString(&modem_string[0]); - printf(BLU "\r\nSending to modem : %s" DEF "\r\n", modem_string); - sockwrite_mdm(modem_string); - printf("READ START\r\n"); - if (sockread_mdm(&MySocketData, 1024, 20)) + char myJsonResponse[512]; + if (cell_modem_Sendreceive(&modem_string[0], &myJsonResponse[0])) { - // If any non-zero response from server, make it GREEN one-time - // then the actual FLOW responses will set the color. if (!ledOnce) { ledOnce = 1; - SetLedColor(0x2); + SetLedColor(0x2); //Green } - printf(YEL "Read back : %s" DEF "\r\n", &MySocketData[0]); - char myJsonResponse[512]; - char stringToCharBuf[BUF_SIZE_FOR_N_MAX_SOCKREAD*MAX_WNC_SOCKREAD_PAYLOAD+1]; // WNC can return max of 1500 (per sockread) - if ((MySocketData.length() + 1) < sizeof(stringToCharBuf)) - { - puts("STRING COPY\r\n"); - strcpy(stringToCharBuf, MySocketData.c_str()); - puts("EXTRACT JSON\r\n"); - if (extract_JSON(stringToCharBuf, &myJsonResponse[0])) - { - printf(GRN "JSON : %s" DEF "\n", &myJsonResponse[0]); - puts("PARSE JSON\r\n"); - parse_JSON(&myJsonResponse[0]); - } - } - else - puts("BUFFER not big enough for sock data!\r\n"); + parse_JSON(&myJsonResponse[0]); } - else - { - printf(RED "No response..." DEF "\r\n"); - } - puts("SOCKREAD DONE\r\n"); } //bTimerExpiredFlag } //forever loop }