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chip_reader
i have no idea what i'm doing
Revision 0:6703a60ee9d0, committed 2015-05-12
- Comitter:
- alecjw
- Date:
- Tue May 12 14:04:47 2015 +0000
- Commit message:
- i have no idea what i'm doing
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 6703a60ee9d0 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue May 12 14:04:47 2015 +0000 @@ -0,0 +1,56 @@ +#include "mbed.h" + +//Just a couple of the outputs directly accessible for debug +DigitalIn O0(p14);/* +DigitalIn O1(p15); +DigitalIn O2(p16); +DigitalIn O3(p20);*/ +DigitalIn O4(p19);/* +DigitalIn O5(p18); +DigitalIn O6(p17); +DigitalIn O7(p21);*/ + +DigitalOut CE(p22); +DigitalOut OE(p24); + +Serial pc(USBTX, USBRX); + +DigitalOut led1(LED1); +DigitalOut led2(LED2); +DigitalOut led3(LED3); +DigitalOut led4(LED4); +BusIn epromdata(p14,p15,p16,p20,p19,p18,p17,p21); +BusOut addressline(p13,p12,p11,p10,p9,p8,p7,p6,p27,p26,p23,p25,p5,p28); + + +int main() { + //CE and OE lines are inverted + CE=1; + OE=1; + //Give me some time to set up a pipe into a file + wait(8); + + int num=16384; //number of addresses + char epromcontents[num]; //char array to store data words + for (int addr=0;addr<num;addr++){ + addressline=addr; //set the address + CE=0;//clock the chip + OE=0; + wait(1e-6); //wait a generous 1000ns + epromcontents[addr]=epromdata.read(); //then read the data into the array + //just as a sanity check, send two of the data lines to LEDs 1 and 2 + led1=O0; + led2=O4; + //bring the clock lines back up and wait for the output to go back into tristated mode + CE=1; + OE=1; + wait(1e-6); + + } + //led3 goes on to say we're done + led3=1; +for(int i=0;i<num;i++) +pc.printf("%d\n",epromcontents[i]);//send each byte over usbserial +led4=1;//to say we're done sending +} +
diff -r 000000000000 -r 6703a60ee9d0 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue May 12 14:04:47 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8ab26030e058 \ No newline at end of file