USBMSD test for GR-PEACH
Dependencies: USBDevice USBMSD_SD mbed
Fork of USBMSD_SD_HelloWorld_Mbed by
Diff: USBDevice/USBSERIAL/CBuffer.h
- Revision:
- 7:6494da2a5c60
- Parent:
- 6:126c4d980196
- Child:
- 8:534fd41d8cc7
--- a/USBDevice/USBSERIAL/CBuffer.h Mon Nov 14 10:00:07 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,51 +0,0 @@ -#ifndef CBUFFER_H -#define CBUFFER_H - -#define MAX_BUF 128 - -class CBuffer { -public: - CBuffer() { - write = 0; - read = 0; - size = MAX_BUF + 1; - }; - - bool isFull() { - return ((write + 1) % size == read); - }; - - bool isEmpty() { - return (read == write); - }; - - void queue(uint8_t k) { - if (isFull()) { - read++; - read %= size; - } - buf[write++] = k; - write %= size; - } - - uint16_t available() { - return (write >= read) ? write - read : size - read + write; - }; - - bool dequeue(uint8_t * c) { - if (!isEmpty()) { - *c = buf[read++]; - read %= size; - } - return(isEmpty()); - }; - - -private: - volatile uint16_t write; - volatile uint16_t read; - uint16_t size; - uint8_t buf[MAX_BUF + 1]; -}; - -#endif \ No newline at end of file