alan broad / Mbed OS carbon_v5_arm_studio

arm studio build

Dependencies:   libxDot-mbed5

src/wbit_util.cpp@1:0d25d9ddbe9f, 2018-08-04 (annotated)

Committer:
alan1974
Date:
Sat Aug 04 19:25:02 2018 +0000
Revision:
1:0d25d9ddbe9f
Parent:
0:a91cd1b08360
Child:
2:0af50f386eb2
same

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alan1974 1:0d25d9ddbe9f 1 #include "global.h"
alan1974 0:a91cd1b08360 2 #include "wbit_util.h"
alan1974 0:a91cd1b08360 3 #include "dot_util.h"
alan1974 1:0d25d9ddbe9f 4 #include "commI2C.h"
alan1974 0:a91cd1b08360 5 #include "mbed.h"
alan1974 0:a91cd1b08360 6 #include "mDot.h"
alan1974 0:a91cd1b08360 7
alan1974 1:0d25d9ddbe9f 8 uint8_t j_attempts = 0; //return number of attempts it took to join the network
alan1974 1:0d25d9ddbe9f 9
alan1974 1:0d25d9ddbe9f 10
alan1974 1:0d25d9ddbe9f 11 //network keys
alan1974 1:0d25d9ddbe9f 12 //these are used as backup keys in case nvm memory is corrupted and we can't read the keys correctly
alan1974 1:0d25d9ddbe9f 13 uint8_t network_id[] = { 0x90, 0xF1, 0x47, 0x90, 0x6C, 0x48, 0x1D, 0x29 }; //static id not used anymore but don't comment out
alan1974 1:0d25d9ddbe9f 14 uint8_t network_key[] = { 0x0F, 0xF9, 0xA2, 0x90, 0x2E, 0xAA, 0x6B, 0x8C, 0x6A, 0x4E, 0xFD, 0x67, 0xF9, 0xA6, 0xF3, 0xD3 }; //OTAA appkey
alan1974 1:0d25d9ddbe9f 15 //==============================================================================
alan1974 1:0d25d9ddbe9f 16 //getChkSum
alan1974 1:0d25d9ddbe9f 17 //compute chksum for nvm data; don't include chksum byte in nvm struc
alan1974 1:0d25d9ddbe9f 18 //==============================================================================
alan1974 1:0d25d9ddbe9f 19 uint8_t getChkSum(nvm *pNvm){
alan1974 1:0d25d9ddbe9f 20 uint8_t i;
alan1974 1:0d25d9ddbe9f 21 uint8_t chksum= 0;
alan1974 1:0d25d9ddbe9f 22 uint8_t *pData = (uint8_t *)pNvm;
alan1974 1:0d25d9ddbe9f 23
alan1974 1:0d25d9ddbe9f 24 for (i = 0 ; i < sizeof(nvm)-1;i++)chksum += pData[i];
alan1974 1:0d25d9ddbe9f 25 return chksum;
alan1974 1:0d25d9ddbe9f 26 }
alan1974 1:0d25d9ddbe9f 27 //==============================================================================
alan1974 1:0d25d9ddbe9f 28 //nvmWrite
alan1974 1:0d25d9ddbe9f 29 //write nvmData struc to nvm memory
alan1974 1:0d25d9ddbe9f 30 //==============================================================================
alan1974 1:0d25d9ddbe9f 31 bool nvmWrite(nvm *pNvm){
alan1974 1:0d25d9ddbe9f 32 pNvm->chksum = getChkSum(pNvm);
alan1974 1:0d25d9ddbe9f 33 return dot->nvmWrite(0,pNvm,sizeof(nvm));
alan1974 1:0d25d9ddbe9f 34 }
alan1974 1:0d25d9ddbe9f 35 //==============================================================================
alan1974 1:0d25d9ddbe9f 36 //nvmRead
alan1974 1:0d25d9ddbe9f 37 //- read nvmData struc from nvm memory
alan1974 1:0d25d9ddbe9f 38 //- if bad chksum then default to hard code network keys
alan1974 1:0d25d9ddbe9f 39 //==============================================================================
alan1974 1:0d25d9ddbe9f 40 bool nvmRead(nvm *pNvm){
alan1974 1:0d25d9ddbe9f 41 uint8_t i;
alan1974 1:0d25d9ddbe9f 42 dot->nvmRead(0,pNvm,sizeof(nvm));
alan1974 1:0d25d9ddbe9f 43 uint8_t chksum = getChkSum(pNvm);
alan1974 1:0d25d9ddbe9f 44 if (chksum == pNvm->chksum){
alan1974 1:0d25d9ddbe9f 45 logInfo("nmvRead: chksum ok");
alan1974 1:0d25d9ddbe9f 46 return true;
alan1974 1:0d25d9ddbe9f 47 }
alan1974 1:0d25d9ddbe9f 48 //bad chksum, resort to old hard coded keys
alan1974 1:0d25d9ddbe9f 49 logInfo("nmvRead: bad chksum, using default values");
alan1974 1:0d25d9ddbe9f 50 for (i = 0; i < sizeof(network_id);i++){
alan1974 1:0d25d9ddbe9f 51 pNvm->network_id[i] = network_id[i];
alan1974 1:0d25d9ddbe9f 52 }
alan1974 1:0d25d9ddbe9f 53 for (i = 0; i < sizeof(network_key);i++){
alan1974 1:0d25d9ddbe9f 54 pNvm->network_key[i] = network_key[i];
alan1974 1:0d25d9ddbe9f 55 }
alan1974 1:0d25d9ddbe9f 56 pNvm->bLogOutputOn = 1; //disable log output
alan1974 1:0d25d9ddbe9f 57 return false;
alan1974 1:0d25d9ddbe9f 58 }
alan1974 1:0d25d9ddbe9f 59 //============================================================================
alan1974 1:0d25d9ddbe9f 60
alan1974 0:a91cd1b08360 61 uint8_t join_network_attempts_wbit() {
alan1974 0:a91cd1b08360 62 return j_attempts;
alan1974 0:a91cd1b08360 63 }
alan1974 0:a91cd1b08360 64
alan1974 0:a91cd1b08360 65 bool join_network_wbit(uint8_t nmbAttempts) {
alan1974 0:a91cd1b08360 66 //int32_t j_attempts = 0;
alan1974 0:a91cd1b08360 67 j_attempts = 0;
alan1974 0:a91cd1b08360 68 int32_t ret = mDot::MDOT_ERROR;
alan1974 0:a91cd1b08360 69
alan1974 0:a91cd1b08360 70 // attempt to join the network
alan1974 0:a91cd1b08360 71 while (ret != mDot::MDOT_OK) {
alan1974 0:a91cd1b08360 72 j_attempts++;
alan1974 0:a91cd1b08360 73 logInfo("attempt %d to join network",j_attempts);
alan1974 0:a91cd1b08360 74 ret = dot->joinNetwork();
alan1974 0:a91cd1b08360 75 if (ret == mDot::MDOT_OK) return true;
alan1974 0:a91cd1b08360 76
alan1974 0:a91cd1b08360 77 logError("failed to join network %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
alan1974 0:a91cd1b08360 78 if (j_attempts >= nmbAttempts)
alan1974 0:a91cd1b08360 79 {
alan1974 0:a91cd1b08360 80 logInfo("attempts %d to join network exceeds specified attempts $d ",j_attempts,nmbAttempts);
alan1974 0:a91cd1b08360 81 return false;
alan1974 0:a91cd1b08360 82 }
alan1974 0:a91cd1b08360 83 // in some frequency bands we need to wait until another channel is available before transmitting again
alan1974 0:a91cd1b08360 84 uint32_t delay_s = (dot->getNextTxMs() / 1000) + 1;
alan1974 0:a91cd1b08360 85 if (delay_s < 2) {
alan1974 0:a91cd1b08360 86 logInfo("waiting %lu s until next free channel", delay_s);
alan1974 0:a91cd1b08360 87 wait(delay_s);
alan1974 0:a91cd1b08360 88 } else {
alan1974 0:a91cd1b08360 89 logInfo("sleeping %lu s until next free channel", delay_s);
alan1974 0:a91cd1b08360 90 dot->sleep(delay_s, mDot::RTC_ALARM, false);
alan1974 0:a91cd1b08360 91 }
alan1974 0:a91cd1b08360 92 }//while
alan1974 0:a91cd1b08360 93 return false;
alan1974 0:a91cd1b08360 94 }