Suga koubou / SerRAM

Serial RAM (SPI SRAM) library 23K256, 23LC1024 (Microchip) see: http://mbed.org/users/okini3939/notebook/extend-memory/

Dependents:   SPIRAM_23LC1024_FIFO

CBuffer_SRAM.h@1:5a261b6a88af, 2013-03-08 (annotated)

Committer:
okini3939
Date:
Fri Mar 08 14:00:38 2013 +0000
Revision:
1:5a261b6a88af
add CircBuffer

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 1:5a261b6a88af 1 /* Copyright (C) 2012 mbed.org, MIT License
okini3939 1:5a261b6a88af 2 *
okini3939 1:5a261b6a88af 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
okini3939 1:5a261b6a88af 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
okini3939 1:5a261b6a88af 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
okini3939 1:5a261b6a88af 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
okini3939 1:5a261b6a88af 7 * furnished to do so, subject to the following conditions:
okini3939 1:5a261b6a88af 8 *
okini3939 1:5a261b6a88af 9 * The above copyright notice and this permission notice shall be included in all copies or
okini3939 1:5a261b6a88af 10 * substantial portions of the Software.
okini3939 1:5a261b6a88af 11 *
okini3939 1:5a261b6a88af 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
okini3939 1:5a261b6a88af 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
okini3939 1:5a261b6a88af 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
okini3939 1:5a261b6a88af 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
okini3939 1:5a261b6a88af 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
okini3939 1:5a261b6a88af 17 */
okini3939 1:5a261b6a88af 18 /*
okini3939 1:5a261b6a88af 19 * Modified by 2013 Hiroshi Suga, MIT License
okini3939 1:5a261b6a88af 20 */
okini3939 1:5a261b6a88af 21
okini3939 1:5a261b6a88af 22 #ifndef CIRCBUFFER_H_
okini3939 1:5a261b6a88af 23 #define CIRCBUFFER_H_
okini3939 1:5a261b6a88af 24
okini3939 1:5a261b6a88af 25 #define WINDOW_SIZE 64
okini3939 1:5a261b6a88af 26 #define WINDOW_MASK 0x3f
okini3939 1:5a261b6a88af 27
okini3939 1:5a261b6a88af 28 #include "SerRAM.h"
okini3939 1:5a261b6a88af 29
okini3939 1:5a261b6a88af 30 class CircBuffer {
okini3939 1:5a261b6a88af 31 public:
okini3939 1:5a261b6a88af 32 CircBuffer(int length);
okini3939 1:5a261b6a88af 33
okini3939 1:5a261b6a88af 34 bool isFull();
okini3939 1:5a261b6a88af 35
okini3939 1:5a261b6a88af 36 bool isEmpty();
okini3939 1:5a261b6a88af 37
okini3939 1:5a261b6a88af 38 bool queue(char k);
okini3939 1:5a261b6a88af 39
okini3939 1:5a261b6a88af 40 void flush();
okini3939 1:5a261b6a88af 41
okini3939 1:5a261b6a88af 42
okini3939 1:5a261b6a88af 43 uint32_t available();
okini3939 1:5a261b6a88af 44
okini3939 1:5a261b6a88af 45 uint32_t use();
okini3939 1:5a261b6a88af 46
okini3939 1:5a261b6a88af 47 bool dequeue(char * c);
okini3939 1:5a261b6a88af 48
okini3939 1:5a261b6a88af 49 void dump();
okini3939 1:5a261b6a88af 50
okini3939 1:5a261b6a88af 51 private:
okini3939 1:5a261b6a88af 52 volatile uint32_t write;
okini3939 1:5a261b6a88af 53 volatile uint32_t read;
okini3939 1:5a261b6a88af 54 uint32_t size;
okini3939 1:5a261b6a88af 55 char buf_w[WINDOW_SIZE];
okini3939 1:5a261b6a88af 56 char buf_r[WINDOW_SIZE];
okini3939 1:5a261b6a88af 57
okini3939 1:5a261b6a88af 58 SerRAM * _ram;
okini3939 1:5a261b6a88af 59 uint32_t ram_addr;
okini3939 1:5a261b6a88af 60 uint32_t ram_w, ram_r;
okini3939 1:5a261b6a88af 61
okini3939 1:5a261b6a88af 62 static int xalloc(int size);
okini3939 1:5a261b6a88af 63 };
okini3939 1:5a261b6a88af 64
okini3939 1:5a261b6a88af 65 #endif