Clinton Lee Taylor
LeeT WiFiLamp code and test
Dependencies: ESP8266_WebServer mbed
Fork of
WiFiLamp
by 
Sebastian Schocke
Diff: main.cpp
- Revision:
- 0:d21e3e1c0a4b
- Child:
- 1:f07afcffeb5a
diff -r 000000000000 -r d21e3e1c0a4b main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Nov 16 13:28:19 2014 +0000
@@ -0,0 +1,144 @@
+#include "mbed.h"
+#include <string>
+#define DEBUG_WIFI
+
+DigitalOut wifiCHPD(D4);
+DigitalOut wifiReset(D9);
+
+int wifiOn = 0;
+
+Serial wifiSerial(D8,D2);
+Serial pc(USBTX,USBRX);
+
+char buffer[1024];
+char reply[1024];
+char response[2048];
+char* rxptr = buffer;
+
+void rxint() {
+ char c = wifiSerial.getc();
+ if( wifiOn == 0 ) return;
+#ifdef DEBUG_WIFI
+ pc.putc(c);
+#endif
+ *rxptr = c;
+ rxptr++;
+ *rxptr = 0;
+}
+
+void readBuffer() {
+ strncpy(reply, buffer, 1024);
+ rxptr = buffer;
+ *rxptr = 0;
+}
+
+short data_waiting(void)
+{
+ char* ok = strstr(buffer, "OK\r\n");
+ char* error = strstr(buffer, "ERROR\r\n");
+ char* nochange = strstr(buffer, "no change\r\n");
+
+ if( (ok != NULL) || (error != NULL ) || (nochange != NULL ) )
+ {
+ return 1;
+ }
+
+ return 0;
+}
+
+short string_waiting(const char* str)
+{
+ char* pr = strstr(buffer, str);
+ char* error = strstr(buffer, "ERROR\r\n");
+
+ if( (pr != NULL) || (error != NULL ) )
+ {
+ return 1;
+ }
+
+ return 0;
+}
+
+int main() {
+ pc.printf("WiFi Lamp Test...\r\n");
+ wifiCHPD = 0;
+ wifiReset = 0;
+ wifiSerial.baud(9600);
+ wifiSerial.attach(&rxint);
+ wait_ms(1000);
+
+ pc.printf("Powering WiFi...\r\n");
+ wifiCHPD = 1;
+ wait_ms(250);
+ pc.printf("Hardware Reset WiFi...\r\n");
+ wifiReset = 1;
+ wifiOn = 1;
+ readBuffer();
+ while( string_waiting("\r\nready\r\n") == 0 ) {
+ wait_ms(10);
+ }
+ readBuffer();
+
+ pc.printf("Starting WiFi...\r\n");
+ pc.printf("Setting Operating Mode...");
+ wifiSerial.printf("AT+CWMODE=3\r\n");
+ while( data_waiting() == 0 ) {
+ wait_ms(10);
+ }
+ readBuffer();
+
+ pc.printf("Done\r\nAccept Multiple connections...");
+ wifiSerial.printf("AT+CIPMUX=1\r\n");
+ while( data_waiting() == 0 ) {
+ wait_ms(10);
+ }
+ readBuffer();
+
+ pc.printf("Done\r\nStarting Web Server...");
+ wifiSerial.printf("AT+CIPSERVER=1,80\r\n");
+ while( data_waiting() == 0 ) {
+ wait_ms(10);
+ }
+ readBuffer();
+
+ pc.printf("Done\r\n");
+
+ while(true) {
+ if( (string_waiting("+IPD") == 1) && (string_waiting("\r\nOK\r\n") == 1) ) {
+ pc.printf("\r\nGot Data\r\n");
+ readBuffer();
+
+ char* ipdPacket = strstr(reply, "+IPD");
+ int linkID, bytesRecv, ipdLen;
+ int numMatched = sscanf(ipdPacket,"+IPD,%d,%d:%n", &linkID, &bytesRecv, &ipdLen);
+ if( numMatched != 2 ) {
+ pc.printf("IPD ERROR : Matched %d, LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", numMatched, linkID, bytesRecv, ipdLen);
+ continue;
+ }
+
+ pc.printf("IPD Data: LinkID=%d, BytesRecv=%d, IPD Header Len=%d\r\n", linkID, bytesRecv, ipdLen);
+ if( strstr(ipdPacket, "HTTP") != NULL ) {
+ pc.printf("Got HTTP Request\r\n");
+ char* httpPacket = ipdPacket + ipdLen;
+ pc.printf("HTTP Packet: %s\r\n", httpPacket);
+
+ std::string httpReply = "<html><head><title>WiFi Lamp</title></head><body><h1>The WiFi Lamp is alive</h1></body></html>";
+ std::string httpReplyPacket = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: %d\r\n\r\n%s";
+
+ sprintf(response, httpReplyPacket.c_str(), httpReply.length(), httpReply.c_str());
+ int bytes = strlen(response);
+ pc.printf("HTTP Reply Packet(%d bytes): %s\r\n", bytes, response);
+ wifiSerial.printf("AT+CIPSEND=%d,%d\r\n", linkID, bytes);
+ wait_ms(500);
+ if( (string_waiting("\r\n>") == 1) ) {
+ wifiSerial.printf(response);
+ }
+ while( string_waiting("\r\nSEND OK\r\n") == 0 ) {
+ wait_ms(10);
+ }
+ pc.printf("\r\nHTTP Reply Sent\r\n");
+ }
+ }
+ wait_ms(10);
+ }
+}
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