a) Set 32 bit width and auto increment in CSW register. b) Write memory address in TAR register c) Access DRW register for read/write data. 4.3.2 Access core registers Read: a) Set 32 bit width in CSW register b) Write DCRSR address into TAR register. c) Write core register index ...
LOG_ERROR("Failed to write memory at 0x%08"PRIx32, tar); else LOG_ERROR("Failed to write memory and, additionally, failed to find out where"); } return retval; } MEM-AP这里我就不画图介绍了,对于我来说只要知道MEM-AP是如何帮助DAP访问到系统地址空间的原理就可以了,大家直接看源码实现去理解。
a)Write 0xA05F0001 to DHCSR, which halting debug enabled. b)Write 0x01 to DEMCR. This enable Reset Vector Catch. c)Write 0xFA050004 to AIRCR. This reset the core. 现在,内核将在第一条指令时暂停,所有外围设备和寄存器(调试寄存器除外)都将设置为复位值。 4.3 Memory and core register access....
a) Set 32 bit width and auto increment in CSW register. b) Write memory address in TAR register c) Access DRW register for read/write data. 4.3.2 Access core registers Read: a) Set 32 bit width in CSW register b) Write DCRSR address into TAR register. c) Write core register index ...
调用swd_write_memory来下载烧写算法到目标地址的示例代码如下: swd_write_memory(ocotp.algo_start, (uint8_t *)ocotp.algo_blob, ocotp.algo_size); 调用OTP模块初始化函数的示例代码如下: swd_flash_syscall_exec(&ocotp.sys_call_s, ocotp.init, 0, 0, 0, 0, FLASHALGO_RETURN_BOOL) ; ...
7.3. Memory and core register access. 7.3.1 Access memory Set 32 bit width and auto increment in CSW register. Write memory address in TAR register Access DRW register for read/write data. Here is the python script example def swd_write_mem(uda, address, data_ws, length): ...
{49intfd;50void*map_base, *virt_addr;51unsignedlongread_result, writeval;52off_t target;53intaccess_type ='w';5455if(argc <2) {56fprintf(stderr,"\nUsage:\t%s { address } [ type [ data ] ]\n"57"\taddress : memory address to act upon\n"58"\ttype : access operation type ...
5.3. The Data Read/Write Register (DRW) DRWregister 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 addr...
7.3.1 Access memory Set 32 bit width and auto increment in CSW register. Write memory address in TAR register Access DRW register for read/write data. Here is the python script example defswd_write_mem(uda,address,data_ws,length):# Auto increment addressesuda.QueueWrite(DP_SELECT,MEMAP_BAN...
memory access. Result is pending, FAULT on sticky error. //! uint8_t swd_writeReg(uint8_t command, const uint8_t *data) { uint8_t rc = swd_sendCommandWithWait(command); if (rc != BDM_RC_OK) { return rc; } swd_tx32(data); return rc; } //! Write register ...