pengfei wu / Mbed 2 deprecated ESP8266Program

For test

Dependencies:   mbed

ESP8266.cpp@4:962bf18523f4, 2015-01-30 (annotated)

Committer:
shennongmin
Date:
Fri Jan 30 11:45:49 2015 +0000
Revision:
4:962bf18523f4
Parent:
1:44f2f0e5d685 
Add uartWiFi.h/cpp files. ready to transplant.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shennongmin 0:7868fa4f17d0 1 #include "ESP8266.h"
shennongmin 0:7868fa4f17d0 2
shennongmin 1:44f2f0e5d685 3 static Serial uart(p28, p27);
shennongmin 1:44f2f0e5d685 4 static ring_buffer rx_buffer = { { 0 }, 0, 0};
shennongmin 1:44f2f0e5d685 5
shennongmin 1:44f2f0e5d685 6 static void write_char(unsigned char c)
shennongmin 1:44f2f0e5d685 7 {
shennongmin 1:44f2f0e5d685 8 int i = (unsigned int)(rx_buffer.head + 1) % SERIAL_BUFFER_SIZE;
shennongmin 1:44f2f0e5d685 9
shennongmin 1:44f2f0e5d685 10 // if we should be storing the received character into the location
shennongmin 1:44f2f0e5d685 11 // just before the tail (meaning that the head would advance to the
shennongmin 1:44f2f0e5d685 12 // current location of the tail), we're about to overflow the buffer
shennongmin 1:44f2f0e5d685 13 // and so we don't write the character or advance the head.
shennongmin 1:44f2f0e5d685 14 if (i != rx_buffer.tail) {
shennongmin 1:44f2f0e5d685 15 rx_buffer.buffer[rx_buffer.head] = c;
shennongmin 1:44f2f0e5d685 16 rx_buffer.head = i;
shennongmin 1:44f2f0e5d685 17 }
shennongmin 1:44f2f0e5d685 18 }
shennongmin 1:44f2f0e5d685 19
shennongmin 1:44f2f0e5d685 20 static void uart_irq_callback()
shennongmin 1:44f2f0e5d685 21 {
shennongmin 1:44f2f0e5d685 22 // Note: you need to actually read from the serial to clear the RX interrupt
shennongmin 1:44f2f0e5d685 23 while(uart.readable()) {
shennongmin 1:44f2f0e5d685 24 write_char(uart.getc());
shennongmin 1:44f2f0e5d685 25 }
shennongmin 1:44f2f0e5d685 26 }
shennongmin 1:44f2f0e5d685 27
shennongmin 1:44f2f0e5d685 28 int read_char(void)
shennongmin 1:44f2f0e5d685 29 {
shennongmin 1:44f2f0e5d685 30 // if the head isn't ahead of the tail, we don't have any characters
shennongmin 1:44f2f0e5d685 31 if (rx_buffer.head == rx_buffer.tail) {
shennongmin 1:44f2f0e5d685 32 return -1;
shennongmin 1:44f2f0e5d685 33 } else {
shennongmin 1:44f2f0e5d685 34 unsigned char c = rx_buffer.buffer[rx_buffer.tail];
shennongmin 1:44f2f0e5d685 35 rx_buffer.tail = (unsigned int)(rx_buffer.tail + 1) % SERIAL_BUFFER_SIZE;
shennongmin 1:44f2f0e5d685 36 return c;
shennongmin 1:44f2f0e5d685 37 }
shennongmin 1:44f2f0e5d685 38 }
shennongmin 1:44f2f0e5d685 39
shennongmin 1:44f2f0e5d685 40 int available(void)
shennongmin 1:44f2f0e5d685 41 {
shennongmin 1:44f2f0e5d685 42 return (unsigned int)(SERIAL_BUFFER_SIZE + rx_buffer.head - rx_buffer.tail) % SERIAL_BUFFER_SIZE;
shennongmin 1:44f2f0e5d685 43 }
shennongmin 1:44f2f0e5d685 44
shennongmin 1:44f2f0e5d685 45 /**
shennongmin 1:44f2f0e5d685 46 * 使用uart.printf或者uart.puts方法时, 当发送数据大于14个字符时, 就会出现异常(串口不断的输出不可显示的字符)
shennongmin 1:44f2f0e5d685 47 * 因此, 相关字符串的打印使用下面的函数来完成, 虽然很简陋, 但是很管用!
shennongmin 1:44f2f0e5d685 48 */
shennongmin 1:44f2f0e5d685 49 void uart_send_string(const char *str)
shennongmin 1:44f2f0e5d685 50 {
shennongmin 1:44f2f0e5d685 51 if (!str)
shennongmin 1:44f2f0e5d685 52 return;
shennongmin 1:44f2f0e5d685 53
shennongmin 1:44f2f0e5d685 54 while(*str)
shennongmin 1:44f2f0e5d685 55 uart.putc(*str++);
shennongmin 1:44f2f0e5d685 56 }
shennongmin 1:44f2f0e5d685 57
shennongmin 1:44f2f0e5d685 58 void ESP8266_init(void)
shennongmin 1:44f2f0e5d685 59 {
shennongmin 1:44f2f0e5d685 60 uart.attach(&uart_irq_callback);
shennongmin 1:44f2f0e5d685 61 }
shennongmin 1:44f2f0e5d685 62
shennongmin 1:44f2f0e5d685 63
shennongmin 1:44f2f0e5d685 64