Msp430 Usb Firmware Upgrade Example Guide

#pragma vector=ADC12_VECTOR __interrupt void ADC12_ISR_Wrapper(void) __isr_ADC12();

Remember to always test power-loss scenarios and have a recovery path. With careful design, your MSP430-based product can stay current for years without ever opening the enclosure.

// Bootloader main.c (excerpt) #include <msp430.h> #include "USB_API/USB_Common/usb.h" #include "USB_API/USB_CDC_API/UsbCdc.h" msp430 usb firmware upgrade example

void jump_to_bsl(void) { // 1. Disable interrupts __disable_interrupt();

Before diving into code, let's understand the benefits: Disable interrupts __disable_interrupt()

with open(firmware_path, 'rb') as f: fw_data = f.read()

// Application main.c #include <msp430.h> Before diving into code

Follow these steps to validate your USB firmware upgrade:

| Region | Address Range | Size | Purpose | |--------------|---------------|--------|----------------------------------| | Bootloader | 0x4400 – 0x5FFF | 7KB | USB upgrade logic | | Application | 0x8000 – 0xFFFF | 32KB | Main firmware | | Info Memory | 0x1800 – 0x19FF | 512B | Upgrade flags & version metadata | | Interrupt vectors | 0xFF80 - 0xFFFF | 128B | Remapped to bootloader area |

// Check upgrade condition: e.g., P2.1 low at startup OR a flag in info memory if((P2IN & BIT1) == 0) upgradeRequested = 1;