1.17.8 Get Memory Range Command
This command will request the memory range for a specific memory region on the device. The specific memory region will be placed in the "Address" field. This field should be populated with 0 if only one memory region is supported. The device will respond with the start and end address of the programmable memory range. This will allow the programmer to determine what ranges are supported and allow the programmer to filter out all other memory addresses.
|
Field Size |
Description |
Data Type |
Comments |
|---|---|---|---|
|
1 |
Command |
uint8_t |
Command (0x0B) - Get Memory Address Range |
|
2 |
Length |
uint16_t |
0x8. Length of the response. |
|
4 |
Unlock Sequence |
uint32_t |
0x00 |
|
4 |
Address |
uint32_t |
Which memory range. 0x0 is default for a device with just single flash. |
Get Memory Address Range Command Response Format
|
Field Size |
Description |
Data Type |
Comments |
|---|---|---|---|
|
1 |
Command |
uint8_t |
Command (0x0B) - Get Memory Address Range |
|
2 |
Length |
uint16_t |
8 -Number of bytes to read. |
|
4 |
Unlock Sequence |
uint32_t |
0 Unlock sequence for flash. Key for currently supported parts is 0x00AA0055 |
|
4 |
Address |
uint32_t |
Which memory range. 0x0 is default for a device with just single flash. |
|
1 |
Status |
uint8_t |
Status of Command
|
| 4 | Program Flash Start | uint32_t | Executable image start address |
| 4 | Program Flash End | uint32_t | Executable image end address |
Get Memory Address Range Example Sequence
Get Address Range of flash. StartAddress = 0x2000 End Address = 0AB7FE. All values in Hex
Example command to the device
|
Field Size |
Description |
Data Type |
Value |
|---|---|---|---|
|
1 |
Command |
uint8_t |
0x0B |
|
2 |
Length |
uint16_t |
0x0008 |
|
4 |
Unlock Sequence |
uint32_t |
0x00000000 |
|
4 |
Address |
uint32_t |
0x00000000 |
Example as viewed on bus: 0x0B, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
Get Memory Address Range Example Response
Example response from the device
|
Field Size |
Description |
Data Type |
Value |
|---|---|---|---|
|
1 |
Command |
uint8_t |
0x0B |
|
2 |
Length |
uint16_t |
0x0008 |
|
4 |
Unlock Sequence |
uint32_t |
0x00000000 |
|
4 |
Address |
uint32_t |
0x00000000 |
|
1 |
Status |
uint8_t |
0x01 |
|
4 |
Program Flash Start |
uint32_t |
0x00002000 |
| 4 | Program Flash End | uint32_t | 0x000AB7FE |
Example as viewed on bus: 0x0B, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0x00, 0xFE, 0xB7, 0x0A, 0x00