Chr Doerr / Mbed 2 deprecated 23LC1024

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Dependencies:   mbed

23LCV1024.cpp@0:937ac9b5da23, 2014-03-18 (annotated)

Committer:
chrdoerr
Date:
Tue Mar 18 16:33:22 2014 +0000
Revision:
0:937ac9b5da23
23LCV1024 library and test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
chrdoerr 0:937ac9b5da23 1 #include "mbed.h"
chrdoerr 0:937ac9b5da23 2 #include "23LCV1024.h"
chrdoerr 0:937ac9b5da23 3
chrdoerr 0:937ac9b5da23 4 SRAM23LCV1024::SRAM23LCV1024(SPI& spi, PinName cs) : _spi(spi), _cs(cs) {
chrdoerr 0:937ac9b5da23 5 _cs = 1; // Deselect the device so that it can initialize
chrdoerr 0:937ac9b5da23 6 }
chrdoerr 0:937ac9b5da23 7
chrdoerr 0:937ac9b5da23 8 int SRAM23LCV1024::getReadMode() {
chrdoerr 0:937ac9b5da23 9 /* The mode bits indicate the operating mode of the SRAM:
chrdoerr 0:937ac9b5da23 10 00 = Byte mode
chrdoerr 0:937ac9b5da23 11 10 = Page mode
chrdoerr 0:937ac9b5da23 12 01 = Sequential mode (default)
chrdoerr 0:937ac9b5da23 13 11 = Reserved
chrdoerr 0:937ac9b5da23 14 */
chrdoerr 0:937ac9b5da23 15
chrdoerr 0:937ac9b5da23 16 _cs = 0;
chrdoerr 0:937ac9b5da23 17 _spi.write(CMD_RDMR);
chrdoerr 0:937ac9b5da23 18 int ram_mode = _spi.write(0)>>6;
chrdoerr 0:937ac9b5da23 19 _cs = 1;
chrdoerr 0:937ac9b5da23 20
chrdoerr 0:937ac9b5da23 21 return ram_mode;
chrdoerr 0:937ac9b5da23 22 }
chrdoerr 0:937ac9b5da23 23
chrdoerr 0:937ac9b5da23 24 int SRAM23LCV1024::readBytes(int address, char* buffer, int length) {
chrdoerr 0:937ac9b5da23 25 int i;
chrdoerr 0:937ac9b5da23 26
chrdoerr 0:937ac9b5da23 27 _cs = 0;
chrdoerr 0:937ac9b5da23 28 _spi.write(CMD_READ);
chrdoerr 0:937ac9b5da23 29 _spi.write((address >> 16) & 0xff);
chrdoerr 0:937ac9b5da23 30 _spi.write((address >> 8) & 0xff);
chrdoerr 0:937ac9b5da23 31 _spi.write(address & 0xff);
chrdoerr 0:937ac9b5da23 32
chrdoerr 0:937ac9b5da23 33 for (i = 0; i < length; i ++) buffer[i] = _spi.write(0);
chrdoerr 0:937ac9b5da23 34
chrdoerr 0:937ac9b5da23 35 _cs = 1;
chrdoerr 0:937ac9b5da23 36 return 0;
chrdoerr 0:937ac9b5da23 37 }
chrdoerr 0:937ac9b5da23 38
chrdoerr 0:937ac9b5da23 39
chrdoerr 0:937ac9b5da23 40 int SRAM23LCV1024::writeBytes(int address, char* buffer, int length) {
chrdoerr 0:937ac9b5da23 41 int i;
chrdoerr 0:937ac9b5da23 42
chrdoerr 0:937ac9b5da23 43 _cs = 0;
chrdoerr 0:937ac9b5da23 44 _spi.write(CMD_WRITE);
chrdoerr 0:937ac9b5da23 45 _spi.write((address >> 16) & 0xff);
chrdoerr 0:937ac9b5da23 46 _spi.write((address >> 8) & 0xff);
chrdoerr 0:937ac9b5da23 47 _spi.write(address & 0xff);
chrdoerr 0:937ac9b5da23 48
chrdoerr 0:937ac9b5da23 49 for (i = 0; i < length; i ++) _spi.write(buffer[i]);
chrdoerr 0:937ac9b5da23 50
chrdoerr 0:937ac9b5da23 51 _cs = 1;
chrdoerr 0:937ac9b5da23 52 return 0;
chrdoerr 0:937ac9b5da23 53 }
chrdoerr 0:937ac9b5da23 54