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The "enable write status" command has to be sent before "write status" command to unlock memory area.
Fork of SST25VF by
main.cpp@1:533050c756e0, 2014-12-28 (annotated)
- Committer:
- timucinanuslu
- Date:
- Sun Dec 28 23:48:29 2014 +0000
- Revision:
- 1:533050c756e0
- Parent:
- 0:1633dfa4b768
send "enable write status" before "write status" sending
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emmibed | 0:1633dfa4b768 | 1 | #include "mbed.h" |
emmibed | 0:1633dfa4b768 | 2 | #include "SST25VF.h" |
emmibed | 0:1633dfa4b768 | 3 | |
emmibed | 0:1633dfa4b768 | 4 | #define w() wait_us(7) |
emmibed | 0:1633dfa4b768 | 5 | DigitalOut sr(p21); |
emmibed | 0:1633dfa4b768 | 6 | |
emmibed | 0:1633dfa4b768 | 7 | SPI spi(p5,p6,p7); |
emmibed | 0:1633dfa4b768 | 8 | |
emmibed | 0:1633dfa4b768 | 9 | SST25VF sram(spi,p21); |
emmibed | 0:1633dfa4b768 | 10 | |
emmibed | 0:1633dfa4b768 | 11 | int main() { |
emmibed | 0:1633dfa4b768 | 12 | |
emmibed | 0:1633dfa4b768 | 13 | char buff[128]; |
emmibed | 0:1633dfa4b768 | 14 | |
emmibed | 0:1633dfa4b768 | 15 | wait(0.2); |
emmibed | 0:1633dfa4b768 | 16 | |
emmibed | 0:1633dfa4b768 | 17 | |
emmibed | 0:1633dfa4b768 | 18 | sram.write((long) 0, 'o'); |
emmibed | 0:1633dfa4b768 | 19 | sram.write((long)1, 'n'); |
emmibed | 0:1633dfa4b768 | 20 | sram.write((long)2, 'e'); |
emmibed | 0:1633dfa4b768 | 21 | sram.write((long)3, '\0'); |
emmibed | 0:1633dfa4b768 | 22 | for (long int address = 0; address < 4; address++) { |
emmibed | 0:1633dfa4b768 | 23 | buff[address] = sram.read(address); |
emmibed | 0:1633dfa4b768 | 24 | } |
emmibed | 0:1633dfa4b768 | 25 | printf("\noutput1 = %s\n", buff); |
emmibed | 0:1633dfa4b768 | 26 | |
emmibed | 0:1633dfa4b768 | 27 | sram.write((long)128, "Hello world!",12); // need separate address space here |
emmibed | 0:1633dfa4b768 | 28 | |
emmibed | 0:1633dfa4b768 | 29 | sram.read((long)128, buff, 12); |
emmibed | 0:1633dfa4b768 | 30 | buff[12]='\0'; |
emmibed | 0:1633dfa4b768 | 31 | |
emmibed | 0:1633dfa4b768 | 32 | printf("output2 = %s\n", buff); |
emmibed | 0:1633dfa4b768 | 33 | |
emmibed | 0:1633dfa4b768 | 34 | |
emmibed | 0:1633dfa4b768 | 35 | } |