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Dependencies:   mbed

Fork of Flashcounter by Kris Scholte Lubberink

main.cpp@1:a201f2861b94, 2018-11-07 (annotated)

Committer:
krissl
Date:
Wed Nov 07 16:04:42 2018 +0000
Revision:
1:a201f2861b94
Parent:
0:7460f6983ba2 
PUB

Who changed what in which revision?

UserRevisionLine numberNew contents of line
krissl 0:7460f6983ba2 1 #include "mbed.h"
krissl 0:7460f6983ba2 2 #include <iostream>
krissl 0:7460f6983ba2 3
krissl 0:7460f6983ba2 4 #include "FlashIAP.h"
krissl 0:7460f6983ba2 5 #pragma pack(push,1)
krissl 0:7460f6983ba2 6 struct packed_A {
krissl 0:7460f6983ba2 7 uint32_t magic;
krissl 0:7460f6983ba2 8 uint32_t value;
krissl 0:7460f6983ba2 9
krissl 0:7460f6983ba2 10 }
krissl 0:7460f6983ba2 11 #pragma pack(pop)
krissl 0:7460f6983ba2 12 ;
krissl 0:7460f6983ba2 13
krissl 0:7460f6983ba2 14 Ticker toggle_led_ticker;
krissl 0:7460f6983ba2 15 enum { MAGIC_VALUE = 0xDEADBEEF };
krissl 0:7460f6983ba2 16 DigitalOut led1(LED1);
krissl 0:7460f6983ba2 17 int counter;
krissl 0:7460f6983ba2 18 uint32_t sector_size;
krissl 0:7460f6983ba2 19 uint32_t page_size;
krissl 0:7460f6983ba2 20 uint32_t prog_size;
krissl 0:7460f6983ba2 21 uint32_t address;
krissl 0:7460f6983ba2 22 FlashIAP flash_device;
krissl 0:7460f6983ba2 23 DigitalIn button(USER_BUTTON);
krissl 0:7460f6983ba2 24
krissl 0:7460f6983ba2 25 bool initializeDevice()
krissl 0:7460f6983ba2 26 {
krissl 0:7460f6983ba2 27 return flash_device.init() == 0;
krissl 0:7460f6983ba2 28 }
krissl 0:7460f6983ba2 29
krissl 0:7460f6983ba2 30 void determineValues()
krissl 0:7460f6983ba2 31 {
krissl 0:7460f6983ba2 32 sector_size = flash_device.get_sector_size(flash_device.get_flash_start() + flash_device.get_flash_size() - 1UL);
krissl 0:7460f6983ba2 33 page_size = flash_device.get_page_size();
krissl 0:7460f6983ba2 34 address = (flash_device.get_flash_start() + flash_device.get_flash_size()) - (sector_size);
krissl 0:7460f6983ba2 35 printf("Sector size: %d \r\n", sector_size);
krissl 0:7460f6983ba2 36 printf("Page size: %d \r\n", page_size);
krissl 0:7460f6983ba2 37 printf("Address: %d \r\n", address);
krissl 0:7460f6983ba2 38 }
krissl 0:7460f6983ba2 39
krissl 0:7460f6983ba2 40 int main()
krissl 0:7460f6983ba2 41 {
krissl 0:7460f6983ba2 42 //Setting up...
krissl 0:7460f6983ba2 43 if(initializeDevice()) {
krissl 0:7460f6983ba2 44 //Device has been initialized.
krissl 0:7460f6983ba2 45 printf("\r\nDevice initialized\r\n");
krissl 0:7460f6983ba2 46 determineValues();
krissl 0:7460f6983ba2 47
krissl 0:7460f6983ba2 48 uint8_t *data_flashed = new uint8_t[8];
krissl 1:a201f2861b94 49 uint8_t buffer[8];
krissl 1:a201f2861b94 50 flash_device.read(buffer, address, 8);
krissl 1:a201f2861b94 51 packed_A const *ptr = (packed_A const *) buffer;
krissl 1:a201f2861b94 52 printf("%d", ptr->magic)
krissl 1:a201f2861b94 53
krissl 0:7460f6983ba2 54 packed_A readMemory;
krissl 0:7460f6983ba2 55
krissl 0:7460f6983ba2 56 flash_device.read(data_flashed, address, 8);
krissl 0:7460f6983ba2 57
krissl 0:7460f6983ba2 58 for(int j = 4; j >= 0 ; j--) {
krissl 0:7460f6983ba2 59 readMemory.magic <<= 8; //Bit-shifting the input because input is (239 190 173 222) and deadbeef is (222 173 190 239)
krissl 0:7460f6983ba2 60 readMemory.magic += data_flashed[j];
krissl 0:7460f6983ba2 61 }
krissl 0:7460f6983ba2 62 for(int j = 8; j >= 4 ; j--) {
krissl 0:7460f6983ba2 63 readMemory.value <<= 8; //Bit-shifting the data into a uint
krissl 0:7460f6983ba2 64 readMemory.value += data_flashed[j];
krissl 0:7460f6983ba2 65 }
krissl 0:7460f6983ba2 66
krissl 0:7460f6983ba2 67 printf("Magic: 0x%x \r\n", readMemory.magic);
krissl 0:7460f6983ba2 68
krissl 0:7460f6983ba2 69 if(readMemory.magic == MAGIC_VALUE) {
krissl 0:7460f6983ba2 70 printf("Address initialized, counter is at: %d \r\n", readMemory.value);
krissl 0:7460f6983ba2 71 counter = readMemory.value;
krissl 0:7460f6983ba2 72 } else {
krissl 0:7460f6983ba2 73 printf("Uninitialized, setting up first time");
krissl 0:7460f6983ba2 74 packed_A newmemory;
krissl 0:7460f6983ba2 75 newmemory.magic = MAGIC_VALUE;
krissl 0:7460f6983ba2 76 newmemory.value = 0;
krissl 0:7460f6983ba2 77 counter = 0;
krissl 0:7460f6983ba2 78 flash_device.erase(address, flash_device.get_sector_size(address));
krissl 0:7460f6983ba2 79 flash_device.program(&newmemory, address, sizeof(newmemory));
krissl 0:7460f6983ba2 80 printf("Flashed");
krissl 0:7460f6983ba2 81 }
krissl 0:7460f6983ba2 82 }
krissl 0:7460f6983ba2 83 while(1) {
krissl 0:7460f6983ba2 84 if (button == 0) { // Button is pressed
krissl 0:7460f6983ba2 85 counter++;
krissl 0:7460f6983ba2 86 packed_A newmemory;
krissl 0:7460f6983ba2 87 newmemory.magic = MAGIC_VALUE;
krissl 0:7460f6983ba2 88 newmemory.value = counter;
krissl 0:7460f6983ba2 89 flash_device.erase(address, flash_device.get_sector_size(address));
krissl 0:7460f6983ba2 90 flash_device.program(&newmemory, address, sizeof(newmemory));
krissl 0:7460f6983ba2 91 printf("Counter: %d \r\n", counter);
krissl 0:7460f6983ba2 92 wait(0.2); //Waiting to make sure that holding down the button doesn't make the machine go crazy
krissl 0:7460f6983ba2 93 }
krissl 0:7460f6983ba2 94 }
krissl 0:7460f6983ba2 95 }