HM_IOT_Demo / Mbed 2 deprecated mDot_LoRa_Street_light

test

Dependencies:   MTS-Serial libmDot mbed-rtos mbed

Fork of mDot_LoRa_Connect_Example by ivan florido

spi_write.cpp@6:f87d57498fd0, 2017-11-08 (annotated)

Committer:
hmiot
Date:
Wed Nov 08 12:10:51 2017 +0000
Revision:
6:f87d57498fd0
Parent:
5:f16b067257b6 
Updated for Zigo Demo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hariom 2:20a5d4681abf 1 #include "mbed.h"
hariom 2:20a5d4681abf 2 #include"Thread.h"
hariom 2:20a5d4681abf 3 #include "rtos.h"
hariom 2:20a5d4681abf 4 Serial pc(USBTX, USBRX); // tx, rx
hariom 2:20a5d4681abf 5
hariom 2:20a5d4681abf 6 SPI spimaster(SPI1_MOSI, SPI1_MISO, SPI1_SCK);
hariom 2:20a5d4681abf 7 DigitalOut cs(SPI1_CS);
hariom 2:20a5d4681abf 8 extern int first_time;
hariom 2:20a5d4681abf 9 extern int device_buffer[8];
hariom 2:20a5d4681abf 10 int ble_flag;
hariom 2:20a5d4681abf 11 extern Mutex my_mutex;
hariom 2:20a5d4681abf 12
varshaberya123 5:f16b067257b6 13
varshaberya123 5:f16b067257b6 14 // reading data from spi
varshaberya123 5:f16b067257b6 15 // spi is communnication between ble and mdot device
varshaberya123 5:f16b067257b6 16 /*
varshaberya123 5:f16b067257b6 17 int spi_read(int *buff)
varshaberya123 5:f16b067257b6 18 {
varshaberya123 5:f16b067257b6 19 pc.baud(9600);
varshaberya123 5:f16b067257b6 20 printf("...SPI read test ..\n\r ");
varshaberya123 5:f16b067257b6 21 // Chip must be deselected
varshaberya123 5:f16b067257b6 22 cs = 1;
varshaberya123 5:f16b067257b6 23 spi.formate(8,0);
varshaberya123 5:f16b067257b6 24 spimaster.frequency(1000000);
varshaberya123 5:f16b067257b6 25
varshaberya123 5:f16b067257b6 26 // Chip must selected
varshaberya123 5:f16b067257b6 27 cs = 0;
varshaberya123 5:f16b067257b6 28 int SUCCESS = 1;
varshaberya123 5:f16b067257b6 29
varshaberya123 5:f16b067257b6 30 //need to figure out how many bytes going to read from ble
varshaberya123 5:f16b067257b6 31 if ( spimaster.read(buff) != SUCCESS)
varshaberya123 5:f16b067257b6 32 {
varshaberya123 5:f16b067257b6 33 printf("reading failed !!!");
varshaberya123 5:f16b067257b6 34 return 0;
varshaberya123 5:f16b067257b6 35 }
varshaberya123 5:f16b067257b6 36 printf("Reading success read data : %X",buff[0]);
varshaberya123 5:f16b067257b6 37 return 1;
varshaberya123 5:f16b067257b6 38 }*/
varshaberya123 5:f16b067257b6 39
hariom 2:20a5d4681abf 40 int spi_write(int *buf)
hariom 2:20a5d4681abf 41 {
hariom 2:20a5d4681abf 42 int response[8];
hariom 2:20a5d4681abf 43 cs = 1;
hariom 2:20a5d4681abf 44 pc.baud(9600);
hariom 2:20a5d4681abf 45 printf("SPI test..\n\r");
hariom 2:20a5d4681abf 46 //int temp;
hmiot 6:f87d57498fd0 47 printf("buff[0] = %d\r\n", buf[0]);
hmiot 6:f87d57498fd0 48 int size = buf[0] + 2;
hmiot 6:f87d57498fd0 49 printf("size = %d\r\n", size);
hmiot 6:f87d57498fd0 50 int k, index = 0;
hmiot 6:f87d57498fd0 51 int write_buff[16];
hariom 2:20a5d4681abf 52 // Chip must be deselected
hariom 2:20a5d4681abf 53 cs = 1;
hmiot 6:f87d57498fd0 54 write_buff[index] = 0x86;
hmiot 6:f87d57498fd0 55 index++;
hmiot 6:f87d57498fd0 56 for (k =0 ; k< size ; k++, index++)
hmiot 6:f87d57498fd0 57 {
hmiot 6:f87d57498fd0 58 write_buff[index] = buf[k];
hmiot 6:f87d57498fd0 59 printf("index = %d, size=%d\r\n", index, size);
hmiot 6:f87d57498fd0 60 }
hmiot 6:f87d57498fd0 61
hmiot 6:f87d57498fd0 62 printf("index = %d, size=%d\r\n", index, size);
hmiot 6:f87d57498fd0 63 write_buff[index] = 0x88;
hmiot 6:f87d57498fd0 64 printf("index = %d, size=%d\r\n", index, size);
hmiot 6:f87d57498fd0 65 printf("index value = %d \r\n", index);
hmiot 6:f87d57498fd0 66
hariom 2:20a5d4681abf 67 //printf("spi data length is:%d\r\n", size);
hariom 2:20a5d4681abf 68 // Setup the spi for 8 bit data, high steady state clock,
hariom 2:20a5d4681abf 69 // second edge capture, with a 1MHz clock rate
hariom 2:20a5d4681abf 70 spimaster.format(8,0);
hariom 2:20a5d4681abf 71 spimaster.frequency(1000000);
hariom 2:20a5d4681abf 72
hariom 2:20a5d4681abf 73 int i = 0;
hmiot 6:f87d57498fd0 74
hmiot 6:f87d57498fd0 75 while(i <= index)
hariom 2:20a5d4681abf 76 {
hariom 2:20a5d4681abf 77 //osDelay(1000);
hariom 2:20a5d4681abf 78 // Select the device by seting chip select low
hariom 2:20a5d4681abf 79 cs = 0;
hmiot 6:f87d57498fd0 80 response[i] = spimaster.write(write_buff[i]);
hariom 2:20a5d4681abf 81 cs = 1;
hmiot 6:f87d57498fd0 82 printf("buf[%d] = %X\r\n", i ,write_buff[i]);
hmiot 6:f87d57498fd0 83 printf("response[%d] = %X\r\n", i , response[i]);
hariom 2:20a5d4681abf 84 i++;
hmiot 6:f87d57498fd0 85
hariom 2:20a5d4681abf 86 //printf("\r\nSlave response = 0x%X, 0x%X, 0x%X, 0x%X", response[0], response[1], response[2], response[3]);
hariom 2:20a5d4681abf 87 }
hariom 2:20a5d4681abf 88
hariom 2:20a5d4681abf 89 //printf("master send: %s\r\n", buf);
hariom 2:20a5d4681abf 90 //printf("slave response: %s\r\n", response);
hariom 2:20a5d4681abf 91 printf("exiting from spi write\r\n");
hariom 2:20a5d4681abf 92 return response[0];
hariom 2:20a5d4681abf 93 }
hariom 2:20a5d4681abf 94
hariom 2:20a5d4681abf 95
hariom 2:20a5d4681abf 96 void ble_task(void const *args)
hariom 2:20a5d4681abf 97 {
hariom 2:20a5d4681abf 98 printf("started ble task\r\n");
hmiot 6:f87d57498fd0 99 int ble_buffer[16];
hariom 2:20a5d4681abf 100 int i;
hariom 2:20a5d4681abf 101 while (true) {
hariom 2:20a5d4681abf 102 if (ble_flag) {
hariom 2:20a5d4681abf 103 my_mutex.lock();
hmiot 6:f87d57498fd0 104 // printf("Device buff Length %d \r\n",);
hmiot 6:f87d57498fd0 105 printf("send Size %d\r\n", device_buffer[0]);
hmiot 6:f87d57498fd0 106 memset(ble_buffer,'\0', 16);
hmiot 6:f87d57498fd0 107 for (i = 0; i <= device_buffer[0] + 2; i++)
hariom 2:20a5d4681abf 108 ble_buffer[i] = device_buffer[i];
hariom 2:20a5d4681abf 109 my_mutex.unlock();
hariom 2:20a5d4681abf 110 printf("spi write called\r\n");
hmiot 6:f87d57498fd0 111
hariom 2:20a5d4681abf 112 spi_write(ble_buffer);
hariom 2:20a5d4681abf 113 ble_flag = 0;
hariom 2:20a5d4681abf 114 }
hariom 2:20a5d4681abf 115 osDelay(1000);
hariom 2:20a5d4681abf 116 }
varshaberya123 5:f16b067257b6 117 }
varshaberya123 5:f16b067257b6 118
varshaberya123 5:f16b067257b6 119 /*void ble_energymeter(void const *argc)
varshaberya123 5:f16b067257b6 120 {
varshaberya123 5:f16b067257b6 121 printf("Starting energymeter ble task \r\n");
varshaberya123 5:f16b067257b6 122 int buff[8];
varshaberya123 5:f16b067257b6 123 while(true)
varshaberya123 5:f16b067257b6 124 {
varshaberya123 5:f16b067257b6 125 if(ble_eflag)
varshaberya123 5:f16b067257b6 126 {
varshaberya123 5:f16b067257b6 127 printf("calling spi read \r\n");
varshaberya123 5:f16b067257b6 128 spi_read(buff);
varshaberya123 5:f16b067257b6 129 ble_eflag = 0;
varshaberya123 5:f16b067257b6 130 }
varshaberya123 5:f16b067257b6 131 osDelay(1000);
varshaberya123 5:f16b067257b6 132 }
varshaberya123 5:f16b067257b6 133 }*/