38 lines
796 B
C
38 lines
796 B
C
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//want this to be in first 2KByte of USB boot space so the handler should typically be present
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#define HARDFAULT __attribute__ ((section (".hardfault")))
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HARDFAULT void HardFault_Handler(void)
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{
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//TODO test out this function
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//should retrieve PC of the instruction that follows whatever caused the hardfault
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//This didn't work for me earlier bc the stack itself was broke
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// asm(
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// "movs r0, #4 \n"
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// "movs r1, lr \n"
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// "tst r0, r1 \n"
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// "beq _MSP \n"
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// "mrs r0, psp \n"
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// "b _HALT \n"
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// "_MSP: \n"
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// " mrs r0, msp \n"
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// "_HALT: \n"
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// " ldr r1, [r0,#20] \n"
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// //" bkpt #0 \n"
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// );
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asm(
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"ldr r0, dead\n"
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"b loop\n"
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//"bkpt\n"
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".p2align 2\n"
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"dead:\n"
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".word 0xDEAD0123\n" //MSP for bootloader
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"loop:\n"
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);
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while (1) {
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}
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}
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