Manually, I downloaded rbf file into the dev board. then I used RAppID BL to program an application code. The RAppID erased the flash and downloaded the application code successfully as shown in the figure below. However, the application code doesn't work.
Are there any steps missing to download an application code successfully ????
Hello @abdelrhman ,
Please ensure you have setup your application properly so that the RCHW value, address of KEY, etc are set at proper addresses and values, etc.
|
Device |
Communication supported |
Device tested |
RBF file |
Boot-loader areas |
||
|
CAN (500Kb/s) |
UART (115200b/s) |
rchw |
m_text |
|||
|
MPC5744P |
CAN0 (PB0-PB1) |
UART2 (PF14-PF15) |
MPC5744P-FML09 1N15P MPC5744P-FMLQ8 0N65H PPG5744P-FMMM8 0N65H |
MPC5744P.rbf |
0x00F98000 - 0x00F98004 |
0x00F98008 - 0x00F9FFFF |
v RCHW and KEY used in the application
Please refer to section 5.2 for defining the value of RCHW and KEY
Please refer to section 6.2 for setting up the application project with S32DS tool
v Notes
The MPC574xP RBF boot-loader occupies 16K memory blocks starting at 0x00F98000. Please note that the address of the final position in “.srec” file will depend on the device memory map
The user application is allowed on RAM from the base address + 0x1400 to the end of RAM
How to use RCHW and KEY in the application
Before starting the application, the boot-loader will search for RCHW and KEY value in the application. If found, the boot-loader will consider the application suitable and run it. Otherwise, the boot-loader will not run the application and stay in waiting mode.
- RCHW: the value of this variable will be programmed into the first 4 bytes of the application.
The only value for RCHW is 0x005A0000
- The KEY value is set at the last position of the application.
The only value for KEY is 0x55AA55AA
Project setup on S32 Design Studio
- Open S32DS for Power Architecture
- Create a new default project wizard
Figure 6.2.1
- Change the “flashchw.c” file by adding the following piece of code:
#if defined(START_FROM_FLASH)
#include "typedefs.h"
#define MPC57xx_ID 0x005A0000 /* RCHW boot ID for MPC57xx devices */
#define VLE_ENABLE 0x01000000 /* VLE is enabled */
#define CPU2_ENABLED 0x00000001
#define CPU0_ENABLED 0x00000002
#define CPU1_ENABLED 0x00000008
extern void _start(void);
extern void _startcore1(void);
extern void _startcore2(void);
#define TARGET_CORES (CPU0_ENABLED | CPU1_ENABLED | CPU2_ENABLED)
//#define RCHW_VAL (MPC57xx_ID | TARGET_CORES)
#define RCHW_VAL 0x005A0000
const volatile uint32_t APPKEY __attribute__ ((section(".appkey"))) = 0x55AA55AA;
const uint32_t __attribute__ ((section(".rchw"))) RCHW [] = {
RCHW_VAL,
/* cpu0_reset_vector */ (uint32_t)_start,
/* delay */ 0x2DC6C0, // 3 sec
/* application key */ (uint32_t)&APPKEY,
/* cpu2_reset_vector */ (uint32_t)_startcore2,
/* cpu1_reset_vector */ (uint32_t)_startcore1};
#endif /* defined(START_FROM_FLASH) */
- Modify the linker file as shown below by adding a new line *(.appKey) into the .text segment:
Figure 6.2.2
- The example output .srec file generated by the compiler integrated in S32 Design Studio:
- The first part of the file:
Figure 6.2.3
- The last part of the file:
Figure 6.2.4
Hope it helps,
Mike
