Andrew Boyson
/
iot
Backing up an unused program in case of future need
at.cpp@0:09f915e6f9f6, 2016-04-13 (annotated)
- Committer:
- andrewboyson
- Date:
- Wed Apr 13 09:21:02 2016 +0000
- Revision:
- 0:09f915e6f9f6
- Child:
- 1:94282484baae
Fixed memory allocation issues and added enumeration to log.
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 | 0:09f915e6f9f6 | 15 | #define WAIT_FOR_OK 4 |
andrewboyson | 0:09f915e6f9f6 | 16 | #define WAIT_FOR_SEND_OK 5 |
andrewboyson | 0:09f915e6f9f6 | 17 | static int wait_for; |
andrewboyson | 0:09f915e6f9f6 | 18 | |
andrewboyson | 0:09f915e6f9f6 | 19 | static int * pFeedback; |
andrewboyson | 0:09f915e6f9f6 | 20 | static void startCommand(int* pStatus, int waitfor) |
andrewboyson | 0:09f915e6f9f6 | 21 | { |
andrewboyson | 0:09f915e6f9f6 | 22 | wait_for = waitfor; |
andrewboyson | 0:09f915e6f9f6 | 23 | pFeedback = pStatus; |
andrewboyson | 0:09f915e6f9f6 | 24 | if (pFeedback) *pFeedback = AT_NONE; |
andrewboyson | 0:09f915e6f9f6 | 25 | } |
andrewboyson | 0:09f915e6f9f6 | 26 | static void finishAndReset(int feedback) |
andrewboyson | 0:09f915e6f9f6 | 27 | { |
andrewboyson | 0:09f915e6f9f6 | 28 | if (pFeedback) |
andrewboyson | 0:09f915e6f9f6 | 29 | { |
andrewboyson | 0:09f915e6f9f6 | 30 | *pFeedback = feedback; |
andrewboyson | 0:09f915e6f9f6 | 31 | pFeedback = NULL; |
andrewboyson | 0:09f915e6f9f6 | 32 | } |
andrewboyson | 0:09f915e6f9f6 | 33 | wait_for = WAIT_FOR_COMMAND; |
andrewboyson | 0:09f915e6f9f6 | 34 | } |
andrewboyson | 0:09f915e6f9f6 | 35 | void AtReleaseResetAndStart(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 36 | { |
andrewboyson | 0:09f915e6f9f6 | 37 | startCommand(pStatus, WAIT_FOR_ESP_READY); |
andrewboyson | 0:09f915e6f9f6 | 38 | EspReleaseFromReset(); |
andrewboyson | 0:09f915e6f9f6 | 39 | } |
andrewboyson | 0:09f915e6f9f6 | 40 | void AtConnect(const char *ssid, const char *password, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 41 | { |
andrewboyson | 0:09f915e6f9f6 | 42 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 43 | EspSendStringF("AT+CWJAP=\"%s\",\"%s\"\r\n", ssid, password); |
andrewboyson | 0:09f915e6f9f6 | 44 | } |
andrewboyson | 0:09f915e6f9f6 | 45 | void AtAt(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 46 | { |
andrewboyson | 0:09f915e6f9f6 | 47 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 48 | EspSendString("AT\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 49 | } |
andrewboyson | 0:09f915e6f9f6 | 50 | |
andrewboyson | 0:09f915e6f9f6 | 51 | void AtConnectId(int id, char * type, char * addr, int port, void * buffer, int bufferlength, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 52 | { |
andrewboyson | 0:09f915e6f9f6 | 53 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 54 | |
andrewboyson | 0:09f915e6f9f6 | 55 | EspIpdBuffer[id] = buffer; |
andrewboyson | 0:09f915e6f9f6 | 56 | EspIpdBufferLen[id] = bufferlength; |
andrewboyson | 0:09f915e6f9f6 | 57 | |
andrewboyson | 0:09f915e6f9f6 | 58 | EspSendStringF("AT+CIPSTART=%d,\"%s\",\"%s\",%d\r\n", id, type, addr, port); |
andrewboyson | 0:09f915e6f9f6 | 59 | } |
andrewboyson | 0:09f915e6f9f6 | 60 | void AtStartServer(int port, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 61 | { |
andrewboyson | 0:09f915e6f9f6 | 62 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 63 | EspSendStringF("AT+CIPSERVER=1,%d\r\n", port); |
andrewboyson | 0:09f915e6f9f6 | 64 | } |
andrewboyson | 0:09f915e6f9f6 | 65 | void AtClose(int id, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 66 | { |
andrewboyson | 0:09f915e6f9f6 | 67 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 68 | EspSendStringF("AT+CIPCLOSE=%d\r\n", id); |
andrewboyson | 0:09f915e6f9f6 | 69 | } |
andrewboyson | 0:09f915e6f9f6 | 70 | void AtMux(int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 71 | { |
andrewboyson | 0:09f915e6f9f6 | 72 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 73 | EspSendString("AT+CIPMUX=1\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 74 | } |
andrewboyson | 0:09f915e6f9f6 | 75 | void AtBaud(int baud, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 76 | { |
andrewboyson | 0:09f915e6f9f6 | 77 | startCommand(pStatus, WAIT_FOR_OK); |
andrewboyson | 0:09f915e6f9f6 | 78 | EspSendStringF("AT+CIOBAUD=%d\r\n", baud); |
andrewboyson | 0:09f915e6f9f6 | 79 | } |
andrewboyson | 0:09f915e6f9f6 | 80 | |
andrewboyson | 0:09f915e6f9f6 | 81 | void AtSendData(int id, int length, const void * pdata, int *pStatus) |
andrewboyson | 0:09f915e6f9f6 | 82 | { |
andrewboyson | 0:09f915e6f9f6 | 83 | startCommand(pStatus, WAIT_FOR_SEND_OK); |
andrewboyson | 0:09f915e6f9f6 | 84 | EspLengthToSend = length; |
andrewboyson | 0:09f915e6f9f6 | 85 | EspDataToSend = pdata; |
andrewboyson | 0:09f915e6f9f6 | 86 | EspSendStringF("AT+CIPSEND=%d,%d\r\n", id, length); |
andrewboyson | 0:09f915e6f9f6 | 87 | } |
andrewboyson | 0:09f915e6f9f6 | 88 | |
andrewboyson | 0:09f915e6f9f6 | 89 | int AtBusy() |
andrewboyson | 0:09f915e6f9f6 | 90 | { |
andrewboyson | 0:09f915e6f9f6 | 91 | return wait_for; |
andrewboyson | 0:09f915e6f9f6 | 92 | } |
andrewboyson | 0:09f915e6f9f6 | 93 | void AtResetAndStop() |
andrewboyson | 0:09f915e6f9f6 | 94 | { |
andrewboyson | 0:09f915e6f9f6 | 95 | startCommand(NULL, WAIT_FOR_COMMAND); |
andrewboyson | 0:09f915e6f9f6 | 96 | EspResetAndStop(); |
andrewboyson | 0:09f915e6f9f6 | 97 | WifiStatus = WIFI_STOPPED; |
andrewboyson | 0:09f915e6f9f6 | 98 | } |
andrewboyson | 0:09f915e6f9f6 | 99 | void AtInit() |
andrewboyson | 0:09f915e6f9f6 | 100 | { |
andrewboyson | 0:09f915e6f9f6 | 101 | startCommand(NULL, WAIT_FOR_COMMAND); |
andrewboyson | 0:09f915e6f9f6 | 102 | WifiStatus = WIFI_STOPPED; |
andrewboyson | 0:09f915e6f9f6 | 103 | } |
andrewboyson | 0:09f915e6f9f6 | 104 | int handleLine() |
andrewboyson | 0:09f915e6f9f6 | 105 | { |
andrewboyson | 0:09f915e6f9f6 | 106 | switch (wait_for) |
andrewboyson | 0:09f915e6f9f6 | 107 | { |
andrewboyson | 0:09f915e6f9f6 | 108 | //No command |
andrewboyson | 0:09f915e6f9f6 | 109 | case WAIT_FOR_COMMAND: |
andrewboyson | 0:09f915e6f9f6 | 110 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 111 | |
andrewboyson | 0:09f915e6f9f6 | 112 | //Connect |
andrewboyson | 0:09f915e6f9f6 | 113 | case WAIT_FOR_ESP_READY: |
andrewboyson | 0:09f915e6f9f6 | 114 | if (strcmp(EspLine, "ready") == 0) |
andrewboyson | 0:09f915e6f9f6 | 115 | { |
andrewboyson | 0:09f915e6f9f6 | 116 | WifiStatus = WIFI_READY; |
andrewboyson | 0:09f915e6f9f6 | 117 | wait_for = WAIT_FOR_WIFI_CONNECTED; |
andrewboyson | 0:09f915e6f9f6 | 118 | } |
andrewboyson | 0:09f915e6f9f6 | 119 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 120 | case WAIT_FOR_WIFI_CONNECTED: |
andrewboyson | 0:09f915e6f9f6 | 121 | if (strcmp(EspLine, "WIFI CONNECTED") == 0) |
andrewboyson | 0:09f915e6f9f6 | 122 | { |
andrewboyson | 0:09f915e6f9f6 | 123 | WifiStatus = WIFI_CONNECTED; |
andrewboyson | 0:09f915e6f9f6 | 124 | wait_for = WAIT_FOR_WIFI_GOT_IP; |
andrewboyson | 0:09f915e6f9f6 | 125 | } |
andrewboyson | 0:09f915e6f9f6 | 126 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 127 | case WAIT_FOR_WIFI_GOT_IP: |
andrewboyson | 0:09f915e6f9f6 | 128 | if (strcmp(EspLine, "WIFI GOT IP") == 0) |
andrewboyson | 0:09f915e6f9f6 | 129 | { |
andrewboyson | 0:09f915e6f9f6 | 130 | WifiStatus = WIFI_GOT_IP; |
andrewboyson | 0:09f915e6f9f6 | 131 | finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 132 | } |
andrewboyson | 0:09f915e6f9f6 | 133 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 134 | |
andrewboyson | 0:09f915e6f9f6 | 135 | //Send command |
andrewboyson | 0:09f915e6f9f6 | 136 | case WAIT_FOR_SEND_OK: |
andrewboyson | 0:09f915e6f9f6 | 137 | if (strcmp(EspLine, "SEND OK") == 0) finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 138 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 139 | |
andrewboyson | 0:09f915e6f9f6 | 140 | //Most commands |
andrewboyson | 0:09f915e6f9f6 | 141 | case WAIT_FOR_OK: |
andrewboyson | 0:09f915e6f9f6 | 142 | if (strcmp(EspLine, "OK" ) == 0) finishAndReset(AT_SUCCESS); |
andrewboyson | 0:09f915e6f9f6 | 143 | if (strcmp(EspLine, "ERROR" ) == 0) finishAndReset(AT_ERROR); |
andrewboyson | 0:09f915e6f9f6 | 144 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 145 | |
andrewboyson | 0:09f915e6f9f6 | 146 | default: |
andrewboyson | 0:09f915e6f9f6 | 147 | LogF("Unknown wait_for %d\r\n", wait_for); |
andrewboyson | 0:09f915e6f9f6 | 148 | return -1; |
andrewboyson | 0:09f915e6f9f6 | 149 | } |
andrewboyson | 0:09f915e6f9f6 | 150 | } |
andrewboyson | 0:09f915e6f9f6 | 151 | int AtMain() |
andrewboyson | 0:09f915e6f9f6 | 152 | { |
andrewboyson | 0:09f915e6f9f6 | 153 | |
andrewboyson | 0:09f915e6f9f6 | 154 | //Monitor time taken |
andrewboyson | 0:09f915e6f9f6 | 155 | static Timer receiveTimer; |
andrewboyson | 0:09f915e6f9f6 | 156 | if (wait_for) |
andrewboyson | 0:09f915e6f9f6 | 157 | { |
andrewboyson | 0:09f915e6f9f6 | 158 | receiveTimer.start(); |
andrewboyson | 0:09f915e6f9f6 | 159 | } |
andrewboyson | 0:09f915e6f9f6 | 160 | else |
andrewboyson | 0:09f915e6f9f6 | 161 | { |
andrewboyson | 0:09f915e6f9f6 | 162 | receiveTimer.stop(); |
andrewboyson | 0:09f915e6f9f6 | 163 | receiveTimer.reset(); |
andrewboyson | 0:09f915e6f9f6 | 164 | } |
andrewboyson | 0:09f915e6f9f6 | 165 | |
andrewboyson | 0:09f915e6f9f6 | 166 | //Check for problems; feedback status and reset |
andrewboyson | 0:09f915e6f9f6 | 167 | if (receiveTimer.read() > TIMEOUT || (wait_for == WAIT_FOR_OK && receiveTimer.read() > TIMEOUT_OK)) |
andrewboyson | 0:09f915e6f9f6 | 168 | { |
andrewboyson | 0:09f915e6f9f6 | 169 | finishAndReset(AT_RESPONCE_TIMEOUT); |
andrewboyson | 0:09f915e6f9f6 | 170 | LogCrLf("Command timed out"); |
andrewboyson | 0:09f915e6f9f6 | 171 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 172 | } |
andrewboyson | 0:09f915e6f9f6 | 173 | |
andrewboyson | 0:09f915e6f9f6 | 174 | |
andrewboyson | 0:09f915e6f9f6 | 175 | //Depending on what the Esp has returned: do nothing; treat the line or finish and reset |
andrewboyson | 0:09f915e6f9f6 | 176 | switch (EspLineAvailable) |
andrewboyson | 0:09f915e6f9f6 | 177 | { |
andrewboyson | 0:09f915e6f9f6 | 178 | case ESP_IDLE: |
andrewboyson | 0:09f915e6f9f6 | 179 | break; |
andrewboyson | 0:09f915e6f9f6 | 180 | case ESP_AVAILABLE: |
andrewboyson | 0:09f915e6f9f6 | 181 | if (handleLine()) return -1; |
andrewboyson | 0:09f915e6f9f6 | 182 | break; |
andrewboyson | 0:09f915e6f9f6 | 183 | case ESP_TIMEOUT: |
andrewboyson | 0:09f915e6f9f6 | 184 | finishAndReset(AT_LINE_TIMEOUT); |
andrewboyson | 0:09f915e6f9f6 | 185 | LogCrLf("Esp timed out"); |
andrewboyson | 0:09f915e6f9f6 | 186 | break; |
andrewboyson | 0:09f915e6f9f6 | 187 | case ESP_OVERFLOW: |
andrewboyson | 0:09f915e6f9f6 | 188 | finishAndReset(AT_LINE_OVERFLOW); |
andrewboyson | 0:09f915e6f9f6 | 189 | LogCrLf("Esp buffer overflow"); |
andrewboyson | 0:09f915e6f9f6 | 190 | break; |
andrewboyson | 0:09f915e6f9f6 | 191 | default: |
andrewboyson | 0:09f915e6f9f6 | 192 | LogF("Unknown EsplineAvailable %d\r\n"); |
andrewboyson | 0:09f915e6f9f6 | 193 | return -1; |
andrewboyson | 0:09f915e6f9f6 | 194 | } |
andrewboyson | 0:09f915e6f9f6 | 195 | |
andrewboyson | 0:09f915e6f9f6 | 196 | return 0; |
andrewboyson | 0:09f915e6f9f6 | 197 | } |