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:
- 0:bbe849f641a8
- Child:
- 2:3d16b28380a9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sun May 29 01:22:48 2016 +0000 @@ -0,0 +1,114 @@ +/** + ****************************************************************************** + * @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 VarDataTab[] = {0, 0, 0}; + + +int main() +{ + + /* Unlock the Flash Program Erase controller */ + HAL_FLASH_Unlock(); + + EE_Init(); + + printf("EEPROM emulation test\n"); + + printf("\n\rType one of the following commands and press space or enter"); + printf("\n\r READ - read all variables\n\r WRITE1 <n> - write first variable\n\r WRITE2 <n> - write second variable\n\r WRITE3 <n> - write third variable"); + printf("\n\rwhere <n> is uint16_t value (0-65535)"); + printf("\n\r"); + + + char command[20]; + char arg[10]; + int i; + + while(1) { + scanf("%s", command); + i=0; + while(command[i]) + { + command[i]=toupper(command[i]); + i++; + } + + + if (strcmp("READ", command)==0) { + for (i=0; i<3; i++) { + EE_ReadVariable(VirtAddVarTab[i], &VarDataTab[i]); + }; + printf("\nvar1=%6u, var2=%6u, var3=%6u",VarDataTab[0],VarDataTab[1],VarDataTab[2]); + } +/////////////////////////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("WRITE1", command)==0) { + scanf("%s", arg); + printf("\nok"); + n=atoi(arg); + EE_WriteVariable(VirtAddVarTab[0], n); + } +//////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("WRITE2", command)==0) { + scanf("%s", arg); + printf("\nok"); + n=atoi(arg); + EE_WriteVariable(VirtAddVarTab[1], n); + } +//////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("WRITE3", command)==0) { + scanf("%s", arg); + printf("\nok"); + n=atoi(arg); + EE_WriteVariable(VirtAddVarTab[2], n); + } +//////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("T1", command)==0) { + // multiple write test. After test var1 = 1000 + printf("\nok"); + for (n=0;n<1001;n++) + { + EE_WriteVariable(VirtAddVarTab[0], n); + }; + } +//////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("T2", command)==0) { + // multiple write test. After test var1 = 1001 + printf("\nok"); + for (n=0;n<1002;n++) + { + EE_WriteVariable(VirtAddVarTab[1], n); + }; + } +//////////////////////////////////////////////////////////////////////////////////// + else if (strcmp("T3", command)==0) { + // multiple write test. After test var1 = 1002 + printf("\nok"); + for (n=0;n<1003;n++) + { + EE_WriteVariable(VirtAddVarTab[2], n); + }; + } +//////////////////////////////////////////////////////////////////////////////////// + + else perror("\nThere is no command matching. Try again"); + + command[0] = arg[0] = 0; + printf("\n\r"); + } + + +}