Richard Finn / Mbed 2 deprecated ATT_Cellular_IOT_Button

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.

main.cpp@68:d38834307b17, 2016-08-09 (annotated)

Committer:
rfinn
Date:
Tue Aug 09 19:23:11 2016 +0000
Revision:
68:d38834307b17
Parent:
64:09004cd610df
Child:
70:e25fe7e5488a
prep for sharing;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rfinn 68:d38834307b17 1 #include "mbed.h"
JMF 0:9d5134074d84 2 #include <cctype>
JMF 0:9d5134074d84 3 #include <string>
JMF 2:0e2ef866af95 4 #include "config_me.h"
stefanrousseau 61:f6b93129f954 5 #include "cell_modem.h"
stefanrousseau 11:e6602513730f 6 #include "hardware.h"
stefanrousseau 11:e6602513730f 7
stefanrousseau 61:f6b93129f954 8 I2C i2c(PTC11, PTC10); //SDA, SCL -- define the I2C pins being used
stefanrousseau 56:cb42ff383dab 9 MODSERIAL pc(USBTX, USBRX, 256, 256); // tx, rx with default tx, rx buffer sizes
stefanrousseau 63:90d7c69993cd 10 MODSERIAL mdm(PTD3, PTD2, 4096, 4096);
stefanrousseau 16:17c5916f2d12 11 DigitalOut led_green(LED_GREEN);
stefanrousseau 16:17c5916f2d12 12 DigitalOut led_red(LED_RED);
stefanrousseau 16:17c5916f2d12 13 DigitalOut led_blue(LED_BLUE);
JMF 0:9d5134074d84 14
rfinn 68:d38834307b17 15 // interrupts for buttons
rfinn 68:d38834307b17 16 InterruptIn sw3(SW3);
rfinn 68:d38834307b17 17 InterruptIn sw2(SW2);
JMF 0:9d5134074d84 18
rfinn 68:d38834307b17 19 // flag - must be volatile as changes within ISR
rfinn 68:d38834307b17 20 // g_ prefix makes it easier to distinguish it as global
rfinn 68:d38834307b17 21 volatile int g_sw3_flag = 0;
rfinn 68:d38834307b17 22 volatile int g_sw2_flag = 0;
rfinn 68:d38834307b17 23
rfinn 68:d38834307b17 24 // SW2 event-triggered interrupt
rfinn 68:d38834307b17 25 void sw2_isr_down()
stefanrousseau 3:26b3cc155f39 26 {
rfinn 68:d38834307b17 27 g_sw2_flag = 1; // set flag in ISR
rfinn 68:d38834307b17 28 }
stefanrousseau 12:7c94ec5069dc 29
rfinn 68:d38834307b17 30 void sw2_isr_up()
stefanrousseau 3:26b3cc155f39 31 {
rfinn 68:d38834307b17 32 g_sw2_flag = 0;
rfinn 68:d38834307b17 33 }
rfinn 68:d38834307b17 34
rfinn 68:d38834307b17 35 // SW3 event-triggered interrupt
rfinn 68:d38834307b17 36 void sw3_isr_down()
rfinn 68:d38834307b17 37 {
rfinn 68:d38834307b17 38 g_sw3_flag = 1; // set flag in ISR
rfinn 68:d38834307b17 39 }
rfinn 68:d38834307b17 40
rfinn 68:d38834307b17 41 void sw3_isr_up()
stefanrousseau 3:26b3cc155f39 42 {
rfinn 68:d38834307b17 43 g_sw3_flag = 0;
rfinn 68:d38834307b17 44 }
rfinn 68:d38834307b17 45
rfinn 68:d38834307b17 46 void GenerateModemString(char * modem_string, char btn1, char btn2)
rfinn 68:d38834307b17 47 {
rfinn 68:d38834307b17 48 sprintf(modem_string, "serial:%s button1:%c button2:%c\r\n",
rfinn 68:d38834307b17 49 M2X_DEVICE_SERIAL, btn1, btn2
rfinn 68:d38834307b17 50 );
rfinn 68:d38834307b17 51 } //GenerateModemString
rfinn 68:d38834307b17 52
stefanrousseau 3:26b3cc155f39 53
stefanrousseau 16:17c5916f2d12 54 //********************************************************************************************************************************************
stefanrousseau 16:17c5916f2d12 55 //* Set the RGB LED's Color
rfinn 68:d38834307b17 56 //* LED Color 0=Off to 7=White. 3 bits represent BGR (bit0=Red, bit1=Green, bit2=Blue)
stefanrousseau 16:17c5916f2d12 57 //********************************************************************************************************************************************
stefanrousseau 16:17c5916f2d12 58 void SetLedColor(unsigned char ucColor)
stefanrousseau 16:17c5916f2d12 59 {
stefanrousseau 16:17c5916f2d12 60 //Note that when an LED is on, you write a 0 to it:
stefanrousseau 16:17c5916f2d12 61 led_red = !(ucColor & 0x1); //bit 0
stefanrousseau 16:17c5916f2d12 62 led_green = !(ucColor & 0x2); //bit 1
stefanrousseau 16:17c5916f2d12 63 led_blue = !(ucColor & 0x4); //bit 2
stefanrousseau 16:17c5916f2d12 64 } //SetLedColor()
stefanrousseau 16:17c5916f2d12 65
stefanrousseau 16:17c5916f2d12 66 //********************************************************************************************************************************************
rfinn 68:d38834307b17 67 //* Process the JSON response. In this example we are only extracting a LED color.
stefanrousseau 16:17c5916f2d12 68 //********************************************************************************************************************************************
stefanrousseau 16:17c5916f2d12 69 bool parse_JSON(char* json_string)
stefanrousseau 16:17c5916f2d12 70 {
stefanrousseau 16:17c5916f2d12 71 char* beginquote;
stefanrousseau 16:17c5916f2d12 72 char token[] = "\"LED\":\"";
stefanrousseau 16:17c5916f2d12 73 beginquote = strstr(json_string, token );
rfinn 68:d38834307b17 74 if ((beginquote != 0)) {
stefanrousseau 16:17c5916f2d12 75 char cLedColor = beginquote[strlen(token)];
stefanrousseau 64:09004cd610df 76 PRINTF(GRN "LED Found : %c" DEF "\r\n", cLedColor);
rfinn 68:d38834307b17 77 switch(cLedColor) {
rfinn 68:d38834307b17 78 case 'O': {
rfinn 68:d38834307b17 79 //Off
stefanrousseau 16:17c5916f2d12 80 SetLedColor(0);
stefanrousseau 16:17c5916f2d12 81 break;
stefanrousseau 16:17c5916f2d12 82 }
rfinn 68:d38834307b17 83 case 'R': {
rfinn 68:d38834307b17 84 //Red
stefanrousseau 16:17c5916f2d12 85 SetLedColor(1);
stefanrousseau 16:17c5916f2d12 86 break;
stefanrousseau 16:17c5916f2d12 87 }
rfinn 68:d38834307b17 88 case 'G': {
rfinn 68:d38834307b17 89 //Green
stefanrousseau 16:17c5916f2d12 90 SetLedColor(2);
stefanrousseau 16:17c5916f2d12 91 break;
stefanrousseau 16:17c5916f2d12 92 }
rfinn 68:d38834307b17 93 case 'Y': {
rfinn 68:d38834307b17 94 //Yellow
stefanrousseau 16:17c5916f2d12 95 SetLedColor(3);
stefanrousseau 16:17c5916f2d12 96 break;
stefanrousseau 16:17c5916f2d12 97 }
rfinn 68:d38834307b17 98 case 'B': {
rfinn 68:d38834307b17 99 //Blue
stefanrousseau 16:17c5916f2d12 100 SetLedColor(4);
stefanrousseau 16:17c5916f2d12 101 break;
stefanrousseau 16:17c5916f2d12 102 }
rfinn 68:d38834307b17 103 case 'M': {
rfinn 68:d38834307b17 104 //Magenta
stefanrousseau 16:17c5916f2d12 105 SetLedColor(5);
stefanrousseau 16:17c5916f2d12 106 break;
stefanrousseau 16:17c5916f2d12 107 }
rfinn 68:d38834307b17 108 case 'T': {
rfinn 68:d38834307b17 109 //Turquoise
stefanrousseau 16:17c5916f2d12 110 SetLedColor(6);
stefanrousseau 16:17c5916f2d12 111 break;
stefanrousseau 16:17c5916f2d12 112 }
rfinn 68:d38834307b17 113 case 'W': {
rfinn 68:d38834307b17 114 //White
stefanrousseau 16:17c5916f2d12 115 SetLedColor(7);
stefanrousseau 16:17c5916f2d12 116 break;
stefanrousseau 16:17c5916f2d12 117 }
rfinn 68:d38834307b17 118 default: {
stefanrousseau 16:17c5916f2d12 119 break;
stefanrousseau 16:17c5916f2d12 120 }
stefanrousseau 16:17c5916f2d12 121 } //switch(cLedColor)
stefanrousseau 16:17c5916f2d12 122 return true;
rfinn 68:d38834307b17 123 } else {
stefanrousseau 16:17c5916f2d12 124 return false;
stefanrousseau 16:17c5916f2d12 125 }
stefanrousseau 16:17c5916f2d12 126 } //parse_JSON
stefanrousseau 16:17c5916f2d12 127
rfinn 68:d38834307b17 128 void send_button_data(char btn1, char btn2)
rfinn 68:d38834307b17 129 {
rfinn 68:d38834307b17 130 char modem_string[512];
rfinn 68:d38834307b17 131 GenerateModemString(&modem_string[0], btn1, btn2);
rfinn 68:d38834307b17 132 char myJsonResponse[512];
rfinn 68:d38834307b17 133 if (cell_modem_Sendreceive(&modem_string[0], &myJsonResponse[0])) {
rfinn 68:d38834307b17 134 if (true) {
rfinn 68:d38834307b17 135 //ledOnce = 1;
rfinn 68:d38834307b17 136 SetLedColor(0x2); //Green
rfinn 68:d38834307b17 137 }
rfinn 68:d38834307b17 138 parse_JSON(&myJsonResponse[0]);
rfinn 68:d38834307b17 139 }
rfinn 68:d38834307b17 140 }
rfinn 68:d38834307b17 141
rfinn 68:d38834307b17 142 int main()
rfinn 68:d38834307b17 143 {
rfinn 68:d38834307b17 144 //static unsigned ledOnce = 0;
fkellermavnet 20:27a4f27254d0 145
stefanrousseau 61:f6b93129f954 146 pc.baud(115200);
rfinn 68:d38834307b17 147 PRINTF(GRN "Hello World from the Cellular IoT Kit!\r\n");
rfinn 68:d38834307b17 148 PRINTF(GRN "Cellular IoT Buttons!\r\n\r\n");
JMF 0:9d5134074d84 149
rfinn 68:d38834307b17 150 // SW have a pull-up resistor, so the pin will be at 3.3 V by default
rfinn 68:d38834307b17 151 // and fall to 0 V when pressed. We therefore need to look for a falling edge
rfinn 68:d38834307b17 152 // on the pin to fire the interrupt
rfinn 68:d38834307b17 153 sw3.fall(&sw3_isr_down);
rfinn 68:d38834307b17 154 sw3.rise(&sw3_isr_up);
rfinn 68:d38834307b17 155 sw2.fall(&sw2_isr_down);
rfinn 68:d38834307b17 156 sw2.rise(&sw2_isr_up);
rfinn 68:d38834307b17 157 // since SW have an external pull-up, we should disable to internal pull-down
rfinn 68:d38834307b17 158 // resistor that is enabled by default using InterruptIn
rfinn 68:d38834307b17 159 sw3.mode(PullNone);
rfinn 68:d38834307b17 160 sw2.mode(PullNone);
stefanrousseau 11:e6602513730f 161
stefanrousseau 61:f6b93129f954 162 // Set LED to RED until init finishes
stefanrousseau 61:f6b93129f954 163 SetLedColor(0x1); //Red
JMF 0:9d5134074d84 164 // Initialize the modem
stefanrousseau 64:09004cd610df 165 PRINTF("\r\n");
stefanrousseau 61:f6b93129f954 166 cell_modem_init();
stefanrousseau 61:f6b93129f954 167 // Set LED BLUE for partial init
stefanrousseau 61:f6b93129f954 168 SetLedColor(0x4); //Blue
JMF 0:9d5134074d84 169
JMF 2:0e2ef866af95 170 // Send and receive data perpetually
JMF 2:0e2ef866af95 171 while(1) {
rfinn 68:d38834307b17 172 if (g_sw3_flag) {
rfinn 68:d38834307b17 173 printf("%s\n","SW3 Button");
rfinn 68:d38834307b17 174 led_green = 0;
rfinn 68:d38834307b17 175 send_button_data('0','1');
rfinn 68:d38834307b17 176 } else {
rfinn 68:d38834307b17 177 led_green = 1;
rfinn 68:d38834307b17 178 }
rfinn 68:d38834307b17 179
rfinn 68:d38834307b17 180 if (g_sw2_flag) {
rfinn 68:d38834307b17 181 printf("%s\n","SW2 Button");
rfinn 68:d38834307b17 182 led_blue = 0;
rfinn 68:d38834307b17 183 send_button_data('1','0');
rfinn 68:d38834307b17 184 } else {
rfinn 68:d38834307b17 185 led_blue = 1;
rfinn 68:d38834307b17 186 }
rfinn 68:d38834307b17 187
rfinn 68:d38834307b17 188 // put the MCU to sleep until an interrupt wakes it up
rfinn 68:d38834307b17 189 sleep();
stefanrousseau 3:26b3cc155f39 190 } //forever loop
JMF 0:9d5134074d84 191 }