1# rainbow99
可以参照下面的程序修改bootcfg的数值，可以通过配置任意IO口的电平来进入bootloader。
-
- //write the BOOTCFG flash register to enable PA1 low to enable
- //the ROM bootloader at poweron
- regVal = HWREG(0x400FE000 + 0x1D0); //BOOTCFG
- if (regVal & 0x80000000) //committed yet?
- {
- HWREG(0x400FD000 + 0x000) = 0x75100000; //FMA=BOOTCFG "address"
- HWREG(0x400FD000 + 0x004) = FLASH_BOOTCFG_PORT_A | FLASH_BOOTCFG_PIN_1 | FLASH_BOOTCFG_DBG1; //FMD=BOOTCFG value (PB5 low/DBG enabled)
- HWREG(0x400FD000 + 0x008) = 0xA4420008; //FMC=key+commit
- SysCtlDelay(100 * SysCtlClockGet() / (3 * 1000));
- }
-
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楼主
测试已经通过，没问题！
