Andrew Boyson
/
iot
Backing up an unused program in case of future need
at.cpp@8:45a0205a298f, 2018-12-06 (annotated)
- Committer:
- andrewboyson
- Date:
- Thu Dec 06 11:40:19 2018 +0000
- Revision:
- 8:45a0205a298f
- Parent:
- 6:be97d38e0b01
Backing up
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
andrewboyson | 0:09f915e6f9f6 | 1 | #include "mbed.h" |
andrewboyson | 0:09f915e6f9f6 | 2 | #include "log.h" |
andrewboyson | 0:09f915e6f9f6 | 3 | #include "esp.h" |
andrewboyson | 0:09f915e6f9f6 | 4 | #include "io.h" |
andrewboyson | 0:09f915e6f9f6 | 5 | #include "at.h" |
andrewboyson | 0:09f915e6f9f6 | 6 | #include "wifi.h" |
andrewboyson | 0:09f915e6f9f6 | 7 | |
andrewboyson | 0:09f915e6f9f6 | 8 | #define TIMEOUT 10 |
andrewboyson | 0:09f915e6f9f6 | 9 | #define TIMEOUT_OK 2 |
andrewboyson | 0:09f915e6f9f6 | 10 | |
andrewboyson | 0:09f915e6f9f6 | 11 | #define WAIT_FOR_COMMAND 0 |
andrewboyson | 0:09f915e6f9f6 | 12 | #define WAIT_FOR_ESP_READY 1 |
andrewboyson | 0:09f915e6f9f6 | 13 | #define WAIT_FOR_WIFI_CONNECTED 2 |
andrewboyson | 0:09f915e6f9f6 | 14 | #define WAIT_FOR_WIFI_GOT_IP 3 |
andrewboyson | 2:06fa34661f19 | 15 | #define WAIT_FOR_STATUS 4 |
andrewboyson | 2:06fa34661f19 | 16 | #define WAIT_FOR_VERSION 5 |
andrewboyson | 2:06fa34661f19 | 17 | #define WAIT_FOR_OK 6 |
andrewboyson | 2:06fa34661f19 | 18 | #define WAIT_FOR_SEND_OK 7 |
andrewboyson | 0:09f915e6f9f6 | 19 | static int wait_for; |
andrewboyson | 0:09f915e6f9f6 | 20 | |
andrewboyson | 0:09f915e6f9f6 | 21 | static int * pFeedback; |
andrewboyson | 0:09f915e6f9f6 | 22 | static void startCommand(int* pStatus, int waitfor) |
andrewboyson | 0:09f915e6f9f6 | 23 | { |
andrewboyson | 0:09f915e6f9f6 | 24 | wait_for = waitfor; |
andrewboyson | 0:09f915e6f9f6 | 25 | pFeedback = pStatus; |
andrewboyson | 0:09f915e6f9f6 | 26 | if (pFeedback) *pFeedback = AT_NONE; |
andrewboyson | 0:09f915e6f9f6 | 27 | } |
andrewboyson | 0:09f915e6f9f6 | 28 | static void finishAndReset(int feedback) |
andrewboyson | 0:09f915e6f9f6 | 29 | { |
andrewboyson | 0:09f915e6f9f6 | 30 | if (pFeedback) |
andrewboyson | 0:09f915e6f9f6 | 31 | { |
andrewboyson | 0:09f915e6f9f6 | 32 | *pFeedback = feedback; |
andrewboyson | 0:09f915e6f9f6 | 33 | pFeedback = NULL; |
andrewboyson | 0:09f915e6f9f6 | 34 | } |
andrewboyson | 0:09f915e6f9f6 | 35 | wait_for = WAIT_FOR_COMMAND; |
andrewboyson | 0:09f915e6f9f6 | 36 | } |
andrewboyson | 0:09f915e6f9f6 | 37 | void AtReleaseResetAndStart(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 38 | { |
andrewboyson | 0:09f915e6f9f6 | 39 | startCommand(pStatus, WAIT_FOR_ESP_READY); |
andrewboyson | 0:09f915e6f9f6 | 40 | EspReleaseFromReset(); |
andrewboyson | 0:09f915e6f9f6 | 41 | } |
andrewboyson | 0:09f915e6f9f6 | 42 | void AtConnect(const char *ssid, const char *password, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 43 | { |
andrewboyson | 0:09f915e6f9f6 | 44 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 45 | EspSendCommandF("AT+CWJAP=\"%s\",\"%s\"\r\n", ssid, password); |
andrewboyson | 0:09f915e6f9f6 | 46 | } |
andrewboyson | 0:09f915e6f9f6 | 47 | void AtAt(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 48 | { |
andrewboyson | 0:09f915e6f9f6 | 49 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 50 | EspSendCommand("AT\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 51 | } |
andrewboyson | 0:09f915e6f9f6 | 52 | |
andrewboyson | 0:09f915e6f9f6 | 53 | void AtConnectId(int id, char * type, char * addr, int port, void * buffer, int bufferlength, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 54 | { |
andrewboyson | 0:09f915e6f9f6 | 55 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 56 | |
andrewboyson | 0:09f915e6f9f6 | 57 | EspIpdBuffer[id] = buffer; |
andrewboyson | 0:09f915e6f9f6 | 58 | EspIpdBufferLen[id] = bufferlength; |
andrewboyson | 0:09f915e6f9f6 | 59 | |
andrewboyson | 6:be97d38e0b01 | 60 | EspSendCommandF("AT+CIPSTART=%d,\"%s\",\"%s\",%d\r\n", id, type, addr, port); |
andrewboyson | 0:09f915e6f9f6 | 61 | } |
andrewboyson | 0:09f915e6f9f6 | 62 | void AtStartServer(int port, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 63 | { |
andrewboyson | 0:09f915e6f9f6 | 64 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 65 | EspSendCommandF("AT+CIPSERVER=1,%d\r\n", port); |
andrewboyson | 0:09f915e6f9f6 | 66 | } |
andrewboyson | 0:09f915e6f9f6 | 67 | void AtClose(int id, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 68 | { |
andrewboyson | 0:09f915e6f9f6 | 69 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 70 | EspSendCommandF("AT+CIPCLOSE=%d\r\n", id); |
andrewboyson | 0:09f915e6f9f6 | 71 | } |
andrewboyson | 0:09f915e6f9f6 | 72 | void AtMux(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 73 | { |
andrewboyson | 0:09f915e6f9f6 | 74 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 75 | EspSendCommand("AT+CIPMUX=1\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 76 | } |
andrewboyson | 0:09f915e6f9f6 | 77 | void AtBaud(int baud, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 78 | { |
andrewboyson | 0:09f915e6f9f6 | 79 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 6:be97d38e0b01 | 80 | EspSendCommandF("AT+CIOBAUD=%d\r\n", baud); |
andrewboyson | 0:09f915e6f9f6 | 81 | } |
andrewboyson | 2:06fa34661f19 | 82 | int AtEspStatus; |
andrewboyson | 2:06fa34661f19 | 83 | void AtGetEspStatus(int *pStatus) |
andrewboyson | 2:06fa34661f19 | 84 | { |
andrewboyson | 2:06fa34661f19 | 85 | AtEspStatus = 0; |
andrewboyson | 2:06fa34661f19 | 86 | startCommand(pStatus, WAIT_FOR_STATUS); |
andrewboyson | 6:be97d38e0b01 | 87 | EspSendCommand("AT+CIPSTATUS\r\n"); |
andrewboyson | 2:06fa34661f19 | 88 | } |
andrewboyson | 2:06fa34661f19 | 89 | char AtEspVersion[20]; |
andrewboyson | 2:06fa34661f19 | 90 | static int versionlinecount; |
andrewboyson | 2:06fa34661f19 | 91 | void AtGetEspVersion(int *pStatus) |
andrewboyson | 2:06fa34661f19 | 92 | { |
andrewboyson | 2:06fa34661f19 | 93 | AtEspVersion[0] = '\0'; |
andrewboyson | 2:06fa34661f19 | 94 | startCommand(pStatus, WAIT_FOR_VERSION); |
andrewboyson | 6:be97d38e0b01 | 95 | EspSendCommand("AT+GMR\r\n"); |
andrewboyson | 2:06fa34661f19 | 96 | versionlinecount = 0; |
andrewboyson | 2:06fa34661f19 | 97 | } |
andrewboyson | 0:09f915e6f9f6 | 98 | void AtSendData(int id, int length, const void * pdata, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 99 | { |
andrewboyson | 0:09f915e6f9f6 | 100 | startCommand(pStatus, WAIT_FOR_SEND_OK); |
andrewboyson | 0:09f915e6f9f6 | 101 | EspLengthToSend = length; |
andrewboyson | 0:09f915e6f9f6 | 102 | EspDataToSend = pdata; |
andrewboyson | 6:be97d38e0b01 | 103 | EspSendCommandF("AT+CIPSEND=%d,%d\r\n", id, length); |
andrewboyson | 0:09f915e6f9f6 | 104 | } |
andrewboyson | 0:09f915e6f9f6 | 105 | |
andrewboyson | 0:09f915e6f9f6 | 106 | int AtBusy() |
andrewboyson | 0:09f915e6f9f6 | 107 | { |
andrewboyson | 0:09f915e6f9f6 | 108 | return wait_for; |
andrewboyson | 0:09f915e6f9f6 | 109 | } |
andrewboyson | 0:09f915e6f9f6 | 110 | void AtResetAndStop() |
andrewboyson | 0:09f915e6f9f6 | 111 | { |
andrewboyson | 0:09f915e6f9f6 | 112 | startCommand(NULL, WAIT_FOR_COMMAND); |
andrewboyson | 0:09f915e6f9f6 | 113 | EspResetAndStop(); |
andrewboyson | 0:09f915e6f9f6 | 114 | WifiStatus = WIFI_STOPPED; |
andrewboyson | 0:09f915e6f9f6 | 115 | } |
andrewboyson | 2:06fa34661f19 | 116 | int AtInit() |
andrewboyson | 0:09f915e6f9f6 | 117 | { |
andrewboyson | 0:09f915e6f9f6 | 118 | startCommand(NULL, WAIT_FOR_COMMAND); |
andrewboyson | 0:09f915e6f9f6 | 119 | WifiStatus = WIFI_STOPPED; |
andrewboyson | 2:06fa34661f19 | 120 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 121 | } |
andrewboyson | 0:09f915e6f9f6 | 122 | int handleLine() |
andrewboyson | 0:09f915e6f9f6 | 123 | { |
andrewboyson | 0:09f915e6f9f6 | 124 | switch (wait_for) |
andrewboyson | 0:09f915e6f9f6 | 125 | { |
andrewboyson | 0:09f915e6f9f6 | 126 | //No command |
andrewboyson | 0:09f915e6f9f6 | 127 | case WAIT_FOR_COMMAND: |
andrewboyson | 0:09f915e6f9f6 | 128 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 129 | |
andrewboyson | 0:09f915e6f9f6 | 130 | //Connect |
andrewboyson | 0:09f915e6f9f6 | 131 | case WAIT_FOR_ESP_READY: |
andrewboyson | 0:09f915e6f9f6 | 132 | if (strcmp(EspLine, "ready") == 0) |
andrewboyson | 0:09f915e6f9f6 | 133 | { |
andrewboyson | 0:09f915e6f9f6 | 134 | WifiStatus = WIFI_READY; |
andrewboyson | 0:09f915e6f9f6 | 135 | wait_for = WAIT_FOR_WIFI_CONNECTED; |
andrewboyson | 0:09f915e6f9f6 | 136 | } |
andrewboyson | 0:09f915e6f9f6 | 137 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 138 | case WAIT_FOR_WIFI_CONNECTED: |
andrewboyson | 0:09f915e6f9f6 | 139 | if (strcmp(EspLine, "WIFI CONNECTED") == 0) |
andrewboyson | 0:09f915e6f9f6 | 140 | { |
andrewboyson | 0:09f915e6f9f6 | 141 | WifiStatus = WIFI_CONNECTED; |
andrewboyson | 0:09f915e6f9f6 | 142 | wait_for = WAIT_FOR_WIFI_GOT_IP; |
andrewboyson | 0:09f915e6f9f6 | 143 | } |
andrewboyson | 0:09f915e6f9f6 | 144 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 145 | case WAIT_FOR_WIFI_GOT_IP: |
andrewboyson | 0:09f915e6f9f6 | 146 | if (strcmp(EspLine, "WIFI GOT IP") == 0) |
andrewboyson | 0:09f915e6f9f6 | 147 | { |
andrewboyson | 0:09f915e6f9f6 | 148 | WifiStatus = WIFI_GOT_IP; |
andrewboyson | 0:09f915e6f9f6 | 149 | finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 150 | } |
andrewboyson | 0:09f915e6f9f6 | 151 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 152 | |
andrewboyson | 0:09f915e6f9f6 | 153 | //Send command |
andrewboyson | 0:09f915e6f9f6 | 154 | case WAIT_FOR_SEND_OK: |
andrewboyson | 0:09f915e6f9f6 | 155 | if (strcmp(EspLine, "SEND OK") == 0) finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 156 | return 0; |
andrewboyson | 2:06fa34661f19 | 157 | |
andrewboyson | 2:06fa34661f19 | 158 | //Status command |
andrewboyson | 2:06fa34661f19 | 159 | case WAIT_FOR_STATUS: |
andrewboyson | 2:06fa34661f19 | 160 | if (sscanf(EspLine, "STATUS:%d", &AtEspStatus) == 1) wait_for = WAIT_FOR_OK; |
andrewboyson | 2:06fa34661f19 | 161 | return 0; |
andrewboyson | 2:06fa34661f19 | 162 | |
andrewboyson | 2:06fa34661f19 | 163 | //Version command |
andrewboyson | 2:06fa34661f19 | 164 | case WAIT_FOR_VERSION: |
andrewboyson | 2:06fa34661f19 | 165 | if (++versionlinecount == 3) |
andrewboyson | 2:06fa34661f19 | 166 | { |
andrewboyson | 2:06fa34661f19 | 167 | strcpy(AtEspVersion, EspLine); |
andrewboyson | 2:06fa34661f19 | 168 | wait_for = WAIT_FOR_OK; |
andrewboyson | 2:06fa34661f19 | 169 | } |
andrewboyson | 2:06fa34661f19 | 170 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 171 | |
andrewboyson | 0:09f915e6f9f6 | 172 | //Most commands |
andrewboyson | 0:09f915e6f9f6 | 173 | case WAIT_FOR_OK: |
andrewboyson | 0:09f915e6f9f6 | 174 | if (strcmp(EspLine, "OK" ) == 0) finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 175 | if (strcmp(EspLine, "ERROR" ) == 0) finishAndReset(AT_ERROR); |
andrewboyson | 0:09f915e6f9f6 | 176 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 177 | |
andrewboyson | 0:09f915e6f9f6 | 178 | default: |
andrewboyson | 0:09f915e6f9f6 | 179 | LogF("Unknown wait_for %d\r\n", wait_for); |
andrewboyson | 0:09f915e6f9f6 | 180 | return -1; |
andrewboyson | 0:09f915e6f9f6 | 181 | } |
andrewboyson | 0:09f915e6f9f6 | 182 | } |
andrewboyson | 0:09f915e6f9f6 | 183 | int AtMain() |
andrewboyson | 0:09f915e6f9f6 | 184 | { |
andrewboyson | 0:09f915e6f9f6 | 185 | |
andrewboyson | 0:09f915e6f9f6 | 186 | //Monitor time taken |
andrewboyson | 0:09f915e6f9f6 | 187 | static Timer receiveTimer; |
andrewboyson | 0:09f915e6f9f6 | 188 | if (wait_for) |
andrewboyson | 0:09f915e6f9f6 | 189 | { |
andrewboyson | 0:09f915e6f9f6 | 190 | receiveTimer.start(); |
andrewboyson | 0:09f915e6f9f6 | 191 | } |
andrewboyson | 0:09f915e6f9f6 | 192 | else |
andrewboyson | 0:09f915e6f9f6 | 193 | { |
andrewboyson | 0:09f915e6f9f6 | 194 | receiveTimer.stop(); |
andrewboyson | 0:09f915e6f9f6 | 195 | receiveTimer.reset(); |
andrewboyson | 0:09f915e6f9f6 | 196 | } |
andrewboyson | 0:09f915e6f9f6 | 197 | |
andrewboyson | 0:09f915e6f9f6 | 198 | //Check for problems; feedback status and reset |
andrewboyson | 0:09f915e6f9f6 | 199 | if (receiveTimer.read() > TIMEOUT || (wait_for == WAIT_FOR_OK && receiveTimer.read() > TIMEOUT_OK)) |
andrewboyson | 0:09f915e6f9f6 | 200 | { |
andrewboyson | 0:09f915e6f9f6 | 201 | finishAndReset(AT_RESPONCE_TIMEOUT); |
andrewboyson | 0:09f915e6f9f6 | 202 | LogCrLf("Command timed out"); |
andrewboyson | 0:09f915e6f9f6 | 203 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 204 | } |
andrewboyson | 0:09f915e6f9f6 | 205 | |
andrewboyson | 0:09f915e6f9f6 | 206 | |
andrewboyson | 0:09f915e6f9f6 | 207 | //Depending on what the Esp has returned: do nothing; treat the line or finish and reset |
andrewboyson | 0:09f915e6f9f6 | 208 | switch (EspLineAvailable) |
andrewboyson | 0:09f915e6f9f6 | 209 | { |
andrewboyson | 0:09f915e6f9f6 | 210 | case ESP_IDLE: |
andrewboyson | 0:09f915e6f9f6 | 211 | break; |
andrewboyson | 0:09f915e6f9f6 | 212 | case ESP_AVAILABLE: |
andrewboyson | 0:09f915e6f9f6 | 213 | if (handleLine()) return -1; |
andrewboyson | 0:09f915e6f9f6 | 214 | break; |
andrewboyson | 0:09f915e6f9f6 | 215 | case ESP_TIMEOUT: |
andrewboyson | 0:09f915e6f9f6 | 216 | finishAndReset(AT_LINE_TIMEOUT); |
andrewboyson | 0:09f915e6f9f6 | 217 | LogCrLf("Esp timed out"); |
andrewboyson | 0:09f915e6f9f6 | 218 | break; |
andrewboyson | 0:09f915e6f9f6 | 219 | case ESP_OVERFLOW: |
andrewboyson | 1:94282484baae | 220 | if (wait_for == WAIT_FOR_ESP_READY) break; //Ignore overflows from the esp's 450 byte boot message |
andrewboyson | 0:09f915e6f9f6 | 221 | finishAndReset(AT_LINE_OVERFLOW); |
andrewboyson | 0:09f915e6f9f6 | 222 | LogCrLf("Esp buffer overflow"); |
andrewboyson | 0:09f915e6f9f6 | 223 | break; |
andrewboyson | 0:09f915e6f9f6 | 224 | default: |
andrewboyson | 0:09f915e6f9f6 | 225 | LogF("Unknown EsplineAvailable %d\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 226 | return -1; |
andrewboyson | 0:09f915e6f9f6 | 227 | } |
andrewboyson | 0:09f915e6f9f6 | 228 | |
andrewboyson | 0:09f915e6f9f6 | 229 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 230 | } |