Tool/software: Code Composer Studio
hi,
i want to store 4 different types of arrays in the info B memory of msp430f5342, but every time to write a data i have to erase the info B totally and write the new data according to the example given in family user guide. This way im unable to erase the particular bytes of the info B.
is there any way to erase the particular data of the info memory or any new approach?
Hello samatha,
Are you using Driverlib for the MSP430F5xxx devices? The Driverlib has functions that you can use to write to particular segments of the flash. You can find it underneath "software" on the device's webpage.
See code and attached screenshot below, I created 4 arrays with corresponding data and wrote to each one separately without affecting the others.
#pragma LOCATION(array_8, 0x1900); //Specify array locations
#pragma LOCATION(array_8_2, 0x190a);
#pragma LOCATION(array_16, 0x1914);
#pragma LOCATION(array_32, 0x1928);
uint8_t array_8[10] = {}; //Define arrays
uint8_t array_8_2[10] = {};
uint16_t array_16[10] = {};
uint32_t array_32[10] = {};
uint8_t data_8[5] = {1,2,3,4,5}; //Data
uint16_t data_16[5] = {1,2,3,4,5};
uint32_t data_32[5] = {1,2,3,4,5};
uint8_t *segBstart = &array_8[0]; //Segment B starts
int main(void)
{
WDTCTL = WDTPW | WDTHOLD; // stop watchdog timer
FlashCtl_eraseSegment(segBstart); //Erase segment B
FlashCtl_write8(&data_8[0], &array_8[0], 5); //Write first array
FlashCtl_write8(&data_8[0], &array_8_2[0], 5); //Write second array
FlashCtl_write16(&data_16[0], &array_16[0], 5); //Write third array
FlashCtl_write32(&data_32[0], &array_32[0], 5); //Write fourth array
return 0;
}
All the best,
Colin Adema
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