nrf_nvmc_write_word((uint32_t)&(NRF_UICR->APPROTECT),0xFFFFFF00); nrf_delay_ms(1000); NVIC_SystemReset(); } } 并在main()函数开始调用,程序运行后既不能在访问SWD接口,除非有相应的解除机制,解除保护。 1.1.3、下载程序后我们使用segger(j_flash)去读我们的芯片,当点击连接时,会有一下提示 显...
Writes the required word to DCRDR. Writes to the DCRSR, with the REGSEL value indicating the required register, and the REGWnR bit as 1 to indicate a write access. This write clears the DHCSR S_REGRDY bit to 0. If required, polls DHCSR until DHCSR.S_REGRDY reads-as-one. This sh...
return mem_ap_write_buf(armv7m->debug_ap, buffer, size, count, address); } int mem_ap_write_buf(struct adiv5_ap *ap, const uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address) { return mem_ap_write(ap, buffer, size, count, address, true); } /** * Synchro...
return mem_ap_write_buf(armv7m->debug_ap, buffer, size, count, address); } int mem_ap_write_buf(struct adiv5_ap *ap, const uint8_t *buffer, uint32_t size, uint32_t count, uint32_t address) { return mem_ap_write(ap, buffer, size, count, address, true); } /** * Synchro...
后来我找到了 ARM 的官方依据：Auto address increment and pack mode on Read or Write data access....
DRW register is used to either write or read from the address held in TAR. To write a value to an internal memory address, first write the address to the TAR register, then write the value to DRW. To read a memory address, first write the address to TAR, then read the value in ...
The debugger must write a 1 to the CDBGPWRUPREQ and CSYSPWRUPREQ bits before using the AHB-AP. The STICKYERR bit is set if an error is returned by a AP transaction. While the STICKYERR bit is set any SWD request will return a FAULT response. To clear the STICKYERR bit, use the ...
type"help".Type"apropos word"tosearchforcommands relatedto"word".(gdb)setarchitecture armThe target architectureisassumedtobe arm(gdb) target remote localhost:3333Remote debugging using localhost:3333warning:Noexecutable has been specifiedandtarget doesnotsupportdetermining executable automatically. Try using...
void SWD_EEE_Write(uint16_t data, uint16_t addr) { volatile uint8_t ib; volatile uint8_t timout = 0x1f; SWD_EEE_CSEQ(0x00, addr); SWD_EEE_DSEQ(data); SWD_EEE_CSEQ(0x04, addr); SWD_EEE_CSEQ(0x84, addr); SWD_EEE_CSEQ(0x02, addr); do { delayus(50); ib = SWD_EEE_...
SWD协议学习 ARM调试原理【调试接⼝框图】【SWD时序】【SWD主机】调试接⼝框图 ARM-M0《ARM Cortex-M0.pdf》⼿册上提到的调试框图如下：《debug_interface_v6_0_architecture_specification_IHI0074A.pd》提到的调试框图如下：由此可知DAP中分为了AP和DP 再看m3内核框图：从这⾥可以看到AP是在芯⽚中的，...