Takuya Urakawa / F401RE-USBHost

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Dependencies:   FATFileSystem

Dependents:   F401RE-USBHostMIDI_RecieveExample

Fork of F401RE-USBHost by Norimasa Okamoto

USBHost/myqueue.h@9:7f9f64cf5ded, 2014-02-03 (annotated)

Committer:
va009039
Date:
Mon Feb 03 13:00:16 2014 +0000
Revision:
9:7f9f64cf5ded
add interrupt write transfer.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
va009039 9:7f9f64cf5ded 1 #pragma once
va009039 9:7f9f64cf5ded 2
va009039 9:7f9f64cf5ded 3 template<class T>
va009039 9:7f9f64cf5ded 4 class myqueue {
va009039 9:7f9f64cf5ded 5 public:
va009039 9:7f9f64cf5ded 6 myqueue() {
va009039 9:7f9f64cf5ded 7 m_w = m_r = 0;
va009039 9:7f9f64cf5ded 8 m_size = 0;
va009039 9:7f9f64cf5ded 9 m_limit = 4;
va009039 9:7f9f64cf5ded 10 m_buf = new T[m_limit];
va009039 9:7f9f64cf5ded 11 }
va009039 9:7f9f64cf5ded 12 void push(T v) {
va009039 9:7f9f64cf5ded 13 if (m_size >= m_limit) {
va009039 9:7f9f64cf5ded 14 int new_limit = m_limit + 4;
va009039 9:7f9f64cf5ded 15 T* new_buf = new T[new_limit];
va009039 9:7f9f64cf5ded 16 for(int i = 0; i < m_size; i++) {
va009039 9:7f9f64cf5ded 17 new_buf[i] = m_buf[i];
va009039 9:7f9f64cf5ded 18 }
va009039 9:7f9f64cf5ded 19 delete[] m_buf;
va009039 9:7f9f64cf5ded 20 m_buf = new_buf;
va009039 9:7f9f64cf5ded 21 m_limit = new_limit;
va009039 9:7f9f64cf5ded 22 }
va009039 9:7f9f64cf5ded 23 m_buf[m_w++] = v;
va009039 9:7f9f64cf5ded 24 if (m_w >= m_limit) {
va009039 9:7f9f64cf5ded 25 m_w = 0;
va009039 9:7f9f64cf5ded 26 }
va009039 9:7f9f64cf5ded 27 m_size++;
va009039 9:7f9f64cf5ded 28 }
va009039 9:7f9f64cf5ded 29 T pop() {
va009039 9:7f9f64cf5ded 30 T v = m_buf[m_r++];
va009039 9:7f9f64cf5ded 31 if (m_r >= m_limit) {
va009039 9:7f9f64cf5ded 32 m_r = 0;
va009039 9:7f9f64cf5ded 33 }
va009039 9:7f9f64cf5ded 34 m_size--;
va009039 9:7f9f64cf5ded 35 return v;
va009039 9:7f9f64cf5ded 36 }
va009039 9:7f9f64cf5ded 37 bool empty() { return (m_w == m_r) ? true : false; }
va009039 9:7f9f64cf5ded 38 int size() { return m_size; }
va009039 9:7f9f64cf5ded 39 void clear() { m_size = 0; }
va009039 9:7f9f64cf5ded 40 T at(int i) { return m_buf[i]; }
va009039 9:7f9f64cf5ded 41
va009039 9:7f9f64cf5ded 42 private:
va009039 9:7f9f64cf5ded 43 int m_limit;
va009039 9:7f9f64cf5ded 44 int m_size;
va009039 9:7f9f64cf5ded 45 int m_w;
va009039 9:7f9f64cf5ded 46 int m_r;
va009039 9:7f9f64cf5ded 47 T *m_buf;
va009039 9:7f9f64cf5ded 48 };