Editing Syscon Hardware
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* 3. Halt syscon by sending command '''halt'''Β to UART, then wait some time until it prints ''HALT: OK''. | * 3. Halt syscon by sending command '''halt'''Β to UART, then wait some time until it prints ''HALT: OK''. | ||
* 4. Reset syscon by sending byte ''0x30'' to GPIO register '''SC_PI0_DIPSW''', byte ''0x30'' to GPIO register '''SC_RSTX''', waiting 1 second and writing byte ''0x31'' to GPIO register '''SC_RSTX'''. | * 4. Reset syscon by sending byte ''0x30'' to GPIO register '''SC_PI0_DIPSW''', byte ''0x30'' to GPIO register '''SC_RSTX''', waiting 1 second and writing byte ''0x31'' to GPIO register '''SC_RSTX'''. | ||
* 5. Get current syscon's firmwave version by sending command '''version''' to UART. After receiving it, look for a character after the first ''_'' (underscore) symbol from the left side of string and if it equals to the character ''b'', then proceed to the next step, otherwise go to the (8) step. | * 5. Get current syscon's firmwave version by sending command '''version''' to UART. After receiving it, look for a character after the first ''_'' (underscore) symbol from the left side of string and if it equals to the character ''b'', then proceed to the next step, otherwise go to the (8) step. | ||
* 6. Prepare syscon for an update by sending command '''firmud''' to UART, then fork the current process; the current process won't finish until a message ''Done'' from UART arrives (it is the end of update operation). | * 6. Prepare syscon for an update by sending command '''firmud''' to UART, then fork the current process; the current process won't finish until a message ''Done'' from UART arrives (it is the end of update operation). | ||
* 7. In the forked process start ''SX'' program and pass firmware file path to it. ''SX'' program reads firmware file and transfer each chunk of it to syscon. | * 7. In the forked process start ''SX'' program and pass firmware file path to it. ''SX'' program reads firmware file and transfer each chunk of it to syscon. | ||