Diff: PlatformUart.cpp

Revision:

0:2cb59ea20ace

Child:

1:4683702d7ad8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PlatformUart.cpp	Sun Dec 04 03:38:44 2016 +0000
@@ -0,0 +1,242 @@
+// interface for SPI implemented with mbed framework
+
+#include "PlatformUart.h"
+#include "mbed.h"
+
+Serial uart(PA_9, PA_10, 115200); // Serial(PinName tx, PinName rx, const char *name=NULL, int baud = MBED_CONF_PLATFORM_DEFAULT_SERIAL_BAUD_RATE);
+
+
+int platformUart::write(int data)
+{
+  return uart.putc(data);
+}
+/*
+int platformUart::write(char* str)
+{
+  return uart.puts(str);
+}
+*/
+
+size_t platformUart::println(void)
+{
+  return uart.puts("\r\n");
+}
+
+size_t platformUart::print(const char str[])
+{
+  return uart.puts(str);
+}
+
+size_t platformUart::print(char c)
+{
+  return uart.putc(c);
+}
+
+size_t platformUart::print(unsigned char b, int base)
+{
+  return print((unsigned long) b, base);
+}
+
+size_t platformUart::print(int n, int base)
+{
+  return print((long) n, base);
+}
+
+size_t platformUart::print(unsigned int n, int base)
+{
+  return print((unsigned long) n, base);
+}
+
+size_t platformUart::print(long n, int base)
+{
+  if (base == 0) {
+    return write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      int t = print('-');
+      n = -n;
+      return printNumber(n, 10) + t;
+    }
+    return printNumber(n, 10);
+  } else {
+    return printNumber(n, base);
+  }
+}
+
+size_t platformUart::print(unsigned long n, int base)
+{
+  if (base == 0) return write(n);
+  else return printNumber(n, base);
+}
+
+size_t platformUart::print(double n, int digits)
+{
+  return printFloat(n, digits);
+}
+
+
+size_t platformUart::println(const char c[])
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(char c)
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(unsigned char b, int base)
+{
+  size_t n = print(b, base);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(unsigned int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(unsigned long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t platformUart::println(double num, int digits)
+{
+  size_t n = print(num, digits);
+  n += println();
+  return n;
+}
+
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+size_t platformUart::printNumber(unsigned long n, uint8_t base) {
+  char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte.
+  char *str = &buf[sizeof(buf) - 1];
+
+  *str = '\0';
+
+  // prevent crash if called with base == 1
+  if (base < 2) base = 10;
+
+  do {
+    unsigned long m = n;
+    n /= base;
+    char c = m - base * n;
+    *--str = c < 10 ? c + '0' : c + 'A' - 10;
+  } while(n);
+
+  return uart.puts(str);
+}
+
+size_t platformUart::printFloat(double number, uint8_t digits) 
+{ 
+  size_t n = 0;
+  
+  if (isnan(number)) return print("nan");
+  if (isinf(number)) return print("inf");
+  if (number > 4294967040.0) return print ("ovf");  // constant determined empirically
+  if (number <-4294967040.0) return print ("ovf");  // constant determined empirically
+  
+  // Handle negative numbers
+  if (number < 0.0)
+  {
+     n += print('-');
+     number = -number;
+  }
+
+  // Round correctly so that print(1.999, 2) prints as "2.00"
+  double rounding = 0.5;
+  for (uint8_t i=0; i<digits; ++i)
+    rounding /= 10.0;
+  
+  number += rounding;
+
+  // Extract the integer part of the number and print it
+  unsigned long int_part = (unsigned long)number;
+  double remainder = number - (double)int_part;
+  n += print(int_part);
+
+  // platformUart the decimal point, but only if there are digits beyond
+  if (digits > 0) {
+    n += print("."); 
+  }
+
+  // Extract digits from the remainder one at a time
+  while (digits-- > 0)
+  {
+    remainder *= 10.0;
+    int toPrint = int(remainder);
+    n += print(toPrint);
+    remainder -= toPrint; 
+  } 
+  
+  return n;
+}
+
+
+extern void eventSerial();
+unsigned char rx_data;
+unsigned char rx_avalible;
+
+// Interupt Routine to read in data from serial port
+void Rx_interrupt() 
+{
+    while (uart.readable())
+    {
+      rx_data = uart.getc();
+      rx_avalible = 1;
+      
+      eventSerial();
+    }
+}
+
+
+
+platformUart::platformUart()
+{
+  rx_data = 0;
+  rx_avalible = 0;
+  
+  uart.attach(&Rx_interrupt, Serial::RxIrq);
+}
+
+unsigned char platformUart::available()
+{
+  return rx_avalible;
+}
+
+unsigned char platformUart::read()
+{
+  rx_avalible = 0;
+  return rx_data;
+}
+
+
+
+
+platformUart Serial0;
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