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# 1.6.4 PIC32WM BZ6 Curiosity Evaluation Board: Building and Running the File System based QSPI Flash Bootloader applications

## Downloading and building the application

To clone or download this application from Github,go to the main page of this repository and then click Clone button to clone this repo or download as zip file. This content can also be download using content manager by following these instructions

Path of the application within the repository is apps/fs/qspi/

To build the application, refer to the following table and open the project using its IDE.

## Bootloader Application

Project Name | Description
--- | ---
bootloader/firmware/pic32wm_bz6_curiosity.X | MPLABX Project for PIC32WM BZ6 Curiosity Evaluation Board

## Programmer application

Project Name | Description
--- | ---
app_programmer/firmware/pic32wm_bz6_curiosity.X | MPLABX Project for PIC32WM BZ6 Curiosity Evaluation Board

## Setting up PIC32WM BZ6 Curiosity Evaluation Board

- To run the demo, the following additional hardware are required:

  - One microSD click

  - One micro SD Card

- Install the microSD click on to the mikroBUS 1 of the device

- Connect the Debug USB port on the board to the computer using a micro USB cable

## Running the Application

1. Open the bootloader project bootloader/firmware/pic32wm_bz6_curiosity.X in the IDE

2. Make sure that the app_programmer/firmware/pic32wm_bz6_curiosity.X is added as a loadable project to bootloader application

   - As the QSPI Flash memory may not have any valid binary required by bootloader for the first time, Adding the app_programmer as loadable allows MPLAB X to create a unified hex file and program both these applications in their respective memory locations based on their linker script configurations

3. Open the Terminal application (Ex.:Tera Term) on the computer to get programmer application messages through UART once loaded

4. Configure the serial port settings as follows:

   - Baud : 115200
   - Data : 8 Bits
   - Parity : None
   - Stop : 1 Bit
   - Flow Control : None

5. Build and program the bootloader application using the IDE

6. Once programming is done bootloader starts execution and directly jumps to application space to run the programmer application

   - RGB_LED_RED starts blinking indicating that the programmer application is running and you should see below output on the console

7. Open the programmer application project app_programmer/firmware/pic32wm_bz6_curiosity.X in the IDE

8. Update app_programmer/firmware/src/app_monitor.c to update printf message from Serial Memory to QSPI Flash Memory as below

       	printf("\r\n###### File System (QSPI Flash Memory) Programmer Application Running ######\r\n");

9. Clean and Build the project to generate the binary (Do not program the binary)

10. Copy the generated application binary file to a sdcard from the Host PC

    - <harmony3_path>/bootloader_apps_serial_memory/apps/fs/qspi/app_programmer/pic32wm_bz6_curiosity.X/dist//pic32wm_bz6_curiosity/production/pic32wm_bz6_curiosity.X.production.bin

11. Rename the copied application binary file to image.bin

12. Insert the sdcard with the application binary image.bin in the sdcard slot of the device

13. Following snapshot shows output of successfully copying the programmer application binary to QSPI Flash Memory

    - RGB_LED_RED should still be blinking

14. Remove the sdcard from the sdcard slot

15. Press and hold the Switch USR_BTN_1 to trigger Bootloader from programmer application, then press NMCLR button twice and you should see below output

16. Once Firmware Update is successful RGB_LED_RED should start blinking indicating updated programmer application running and you should see below output on the console

## Additional Steps (Optional)

- To bootload any other application refer to Application Configurations

  - Note - This application should have programming capabilities to QSPI Flash Memory

  - Application vector table need to be placed in the FLASH memory (from BOOT_FLASH to FLASH memory)

- Once done repeat the applicable steps mentioned in Running The Application