diff options
Diffstat (limited to 'libraries/SIM800/SIM800.cpp')
| -rw-r--r-- | libraries/SIM800/SIM800.cpp | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/libraries/SIM800/SIM800.cpp b/libraries/SIM800/SIM800.cpp new file mode 100644 index 0000000..7a63482 --- /dev/null +++ b/libraries/SIM800/SIM800.cpp @@ -0,0 +1,294 @@ +/************************************************************************* +* Test sketch for SIM800 library +* Distributed under GPL v2.0 +* Written by Stanley Huang <stanleyhuangyc@gmail.com> +* For more information, please visit http://arduinodev.com +*************************************************************************/ + +#include "SIM800.h" + +bool CGPRS_SIM800::init() +{ + simser.begin(115200); + pinMode(SIM800_RESET_PIN, OUTPUT); + digitalWrite(SIM800_RESET_PIN, HIGH); + delay(10); + digitalWrite(SIM800_RESET_PIN, LOW); + delay(100); + // generate turn on pulse + digitalWrite(SIM800_RESET_PIN, HIGH); + delay(3000); + if (sendCommand("AT")) { + sendCommand("AT+IPR=115200"); + sendCommand("ATE0"); + return true; + } + return false; +} +byte CGPRS_SIM800::setup(const char* apn) +{ + bool success = false; + for (byte n = 0; n < 30; n++) { + if (sendCommand("AT+CREG?", 2000)) { + char *p = strstr(buffer, "0,"); + if (p) { + char mode = *(p + 2); +#if DEBUG + con.print("Mode:"); + con.println(mode); +#endif + if (mode == '1' || mode == '5') { + success = true; + break; + } + } + } + delay(1000); + } + + if (!success) + return 1; + + if (!sendCommand("AT+CGATT?")) + return 2; + + if (!sendCommand("AT+SAPBR=3,1,\"Contype\",\"GPRS\"")) + return 3; + + simser.print("AT+SAPBR=3,1,\"APN\",\""); + simser.print(apn); + simser.println('\"'); + if (!sendCommand(0)) + return 4; + + for (byte n = 0; n < 10 && !(success = (sendCommand("AT+SAPBR=1,1") != 0)); n++) + delay(500); + + if (!success) + return 5; + + return 0; +} +bool CGPRS_SIM800::getOperatorName() +{ + // display operator name + if (sendCommand("AT+COPS?", "OK\r", "ERROR\r") == 1) { + char *p = strstr(buffer, ",\""); + if (p) { + p += 2; + char *s = strchr(p, '\"'); + if (s) *s = 0; + strcpy(buffer, p); + return true; + } + } + return false; +} +bool CGPRS_SIM800::checkSMS() +{ + if (sendCommand("AT+CMGR=1", "+CMGR:", "ERROR") == 1) { + // reads the data of the SMS + sendCommand(0, 100, "\r\n"); + if (sendCommand(0)) { + // remove the SMS + sendCommand("AT+CMGD=1"); + return true; + } + } + return false; +} +int CGPRS_SIM800::getSignalQuality() +{ + sendCommand("AT+CSQ"); + char *p = strstr(buffer, "CSQ: "); + if (p) { + int n = atoi(p + 2); + if (n == 99 || n == -1) return 0; + return n * 2 - 114; + } else { + return 0; + } +} +void CGPRS_SIM800::httpUninit() +{ + sendCommand("AT+HTTPTERM"); +} + +bool CGPRS_SIM800::httpInit() +{ + if (!sendCommand("AT+HTTPINIT", 10000) || !sendCommand("AT+HTTPPARA=\"CID\",1", 5000)) { + httpState = HTTP_DISABLED; + return false; + } + httpState = HTTP_READY; + return true; +} +bool CGPRS_SIM800::httpConnect(const char* url, const char* args) +{ + // Sets url + simser.print("AT+HTTPPARA=\"URL\",\""); + simser.print(url); + if (args) { + simser.print('?'); + simser.print(args); + } + + simser.println('\"'); + if (sendCommand(0)) + { + // Starts GET action + simser.println("AT+HTTPACTION=0"); + httpState = HTTP_CONNECTING; + bytesRecv = 0; + checkTimer = millis(); + } else { + httpState = HTTP_ERROR; + } + return false; +} +// check if HTTP connection is established +// return 0 for in progress, 1 for success, 2 for error +byte CGPRS_SIM800::httpIsConnected() +{ + byte ret = checkbuffer("0,200", "0,60", 10000); + if (ret >= 2) { + httpState = HTTP_ERROR; + return -1; + } + return ret; +} +void CGPRS_SIM800::httpRead() +{ + simser.println("AT+HTTPREAD"); + httpState = HTTP_READING; + bytesRecv = 0; + checkTimer = millis(); +} +// check if HTTP connection is established +// return 0 for in progress, -1 for error, number of http payload bytes on success +int CGPRS_SIM800::httpIsRead() +{ + byte ret = checkbuffer("+HTTPREAD: ", "Error", 10000) == 1; + if (ret == 1) { + bytesRecv = 0; + // read the rest data + sendCommand(0, 100, "\r\n"); + int bytes = atoi(buffer); + sendCommand(0); + bytes = min(bytes, sizeof(buffer) - 1); + buffer[bytes] = 0; + return bytes; + } else if (ret >= 2) { + httpState = HTTP_ERROR; + return -1; + } + return 0; +} +byte CGPRS_SIM800::sendCommand(const char* cmd, unsigned int timeout, const char* expected) +{ + if (cmd) { + purgeSerial(); +#if DEBUG + con.print('>'); + con.println(cmd); +#endif + simser.println(cmd); + } + uint32_t t = millis(); + byte n = 0; + do { + if (simser.available()) { + char c = simser.read(); + if (n >= sizeof(buffer) - 1) { + // buffer full, discard first half + n = sizeof(buffer) / 2 - 1; + memcpy(buffer, buffer + sizeof(buffer) / 2, n); + } + buffer[n++] = c; + buffer[n] = 0; + if (strstr(buffer, expected ? expected : "OK\r")) { +#if DEBUG + con.print("[1]"); + con.println(buffer); +#endif + return n; + } + } + } while (millis() - t < timeout); +#if DEBUG + con.print("[0]"); + con.println(buffer); +#endif + return 0; +} +byte CGPRS_SIM800::sendCommand(const char* cmd, const char* expected1, const char* expected2, unsigned int timeout) +{ + if (cmd) { + purgeSerial(); +#if DEBUG + con.print('>'); + con.println(cmd); +#endif + simser.println(cmd); + } + uint32_t t = millis(); + byte n = 0; + do { + if (simser.available()) { + char c = simser.read(); + if (n >= sizeof(buffer) - 1) { + // buffer full, discard first half + n = sizeof(buffer) / 2 - 1; + memcpy(buffer, buffer + sizeof(buffer) / 2, n); + } + buffer[n++] = c; + buffer[n] = 0; + if (strstr(buffer, expected1)) { +#if DEBUG + con.print("[1]"); + con.println(buffer); +#endif + return 1; + } + if (strstr(buffer, expected2)) { +#if DEBUG + con.print("[2]"); + con.println(buffer); +#endif + return 2; + } + } + } while (millis() - t < timeout); +#if DEBUG + con.print("[0]"); + con.println(buffer); +#endif + return 0; +} + +byte CGPRS_SIM800::checkbuffer(const char* expected1, const char* expected2, unsigned int timeout) +{ + while (simser.available()) { + char c = simser.read(); + if (bytesRecv >= sizeof(buffer) - 1) { + // buffer full, discard first half + bytesRecv = sizeof(buffer) / 2 - 1; + memcpy(buffer, buffer + sizeof(buffer) / 2, bytesRecv); + } + buffer[bytesRecv++] = c; + buffer[bytesRecv] = 0; + if (strstr(buffer, expected1)) { + return 1; + } + if (expected2 && strstr(buffer, expected2)) { + return 2; + } + } + return (millis() - checkTimer < timeout) ? 0 : 3; +} + +void CGPRS_SIM800::purgeSerial() +{ + while (simser.available()) simser.read(); +} + |