simple test EEPROM emulation (STM algorithm described in the application notes: AN4061, AN3969, AN2594, AN3390, AN4056) for STM32F091
Description in AN4061 from STM.
Changed (compared with the original code AN4061):
- possibility of a larger size of emulated EEPROM (using multiple Flash pages)
- dummy variables prevent overwrite code in Flash by algorithm of EEPROM emulation
Macro PAGE_NB_PVP (in eeprom.h) defines the size of the virtual page.
Eg. For F091 where Flash page are 2kB value 4 gives 8kB.
Size 8kB virtual page gives you the ability to use max. approx. 2k of 16-bit variables.
Diff: main.cpp
- Revision:
- 2:3d16b28380a9
- Parent:
- 0:bbe849f641a8
--- a/main.cpp Sun May 29 02:04:21 2016 +0000 +++ b/main.cpp Fri Jul 29 21:18:28 2016 +0000 @@ -1,23 +1,17 @@ -/** - ****************************************************************************** - * @file main.cpp - * @author ANG Group (Nelson Santos; Irina Baptista; Pierluigi Urru) - * @version V0.0.3 - * @brief Simple Example application for using the X_NUCLEO_IKS01A1 - * MEMS Inertial & Environmental Sensor Nucleo expansion board. - ****************************************************************************** -*/ #include "mbed.h" #include "eeprom.h" #include <ctype.h> + + uint16_t n = 0; /* Virtual address defined by the user: 0xFFFF value is prohibited */ -uint16_t VirtAddVarTab[] = {0x5555, 0x6666, 0x7777}; +uint16_t VirtAddVarTab[NB_OF_VAR] = {0x5555, 0x6666, 0x7777}; uint16_t VarDataTab[] = {0, 0, 0}; + int main() { @@ -86,7 +80,7 @@ } //////////////////////////////////////////////////////////////////////////////////// else if (strcmp("T2", command)==0) { - // multiple write test. After test var1 = 1001 + // multiple write test. After test var2 = 1001 printf("\nok"); for (n=0;n<1002;n++) { @@ -95,7 +89,7 @@ } //////////////////////////////////////////////////////////////////////////////////// else if (strcmp("T3", command)==0) { - // multiple write test. After test var1 = 1002 + // multiple write test. After test var3 = 1002 printf("\nok"); for (n=0;n<1003;n++) {