15.5. Hello demo¶
15.5.1. Overview¶
Multi-core example project runs the “hello world” example on core0 and runs the “rgb_led” example on core1.
In this project:
The serial port outputs “hello world”; Manually input the stirng information through the keyboard and print it through the serial port
The RGB leds are switching among RED, GREEN, BLUE respectively.
15.5.2. Board Setting¶
BOOT_PIN should be configured to 0-OFF, 1-OFF
15.5.3. Generate core1 project¶
CMAKE_BUILD_TYPE must be “sec_core_img”
15.5.4. Generate core0 project¶
CMAKE_BUILD_TYPE user can specify “debug” or “flash_xip”, etc.
15.5.5. Build project¶
Core1 project must be generated and built first Core0 project must be generated after the core1 project has been built successfully.
15.5.6. Debugging the example¶
Download the core0 example to the target and run core0 example first
Download the core1 example to the target and run the core1 example
NOTE
If users expects to debug the core0 and core1 example step by step, users must ensure the board_init() function is executed before debugging the core1 example as some hardware resoruces needs to be initialized by board_init() in core0 example.
When debug core0 and the project runs successfully, The serial port terminal will output the following information:
hello world from primary core
When debug core1 and the project runs successfully, The RGB leds are switching among RED, GREEN, BLUE respectively.
15.5.7. Running the example¶
When CMAKE_BUILD_TYPE is “flash_xip” , download the core0 example to the target, stop debugging and reset the board. When the project runs successfully, the serial port terminal will output the following information:
Copying secondary core image to destination memory... Starting secondary core... Secondary core started, RGB leds are blinking... hello world from primary coreThe RGB leds are switching among RED, GREEN, BLUE respectively.