Roy_01
108 lines
2.7 KiB
Markdown
108 lines
2.7 KiB
Markdown
flash_status_flags
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---
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This example is used to observe the staust register of FMC
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> For generating the wrong behavior, directly control the registers of FMC
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It observes 4-cases
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> + Normal case with CMD end
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> + Wrong address (over range of device)
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> + Miss unlock sector of flash
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> + Use wrong auth-key to operate flash
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## Log
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Use serial port with baudrate 115200, 8bit, no parity check.
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```
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16:17:42
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Observe the error status of FMC with wrong behavior
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## Case: CMD end flag
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@ target address: x00004000
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======= FMC Regs ====
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FLASH->CMD = xA5A50123
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FLASH->ISR = x00000000
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FLASH->AR = x00004000
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FLASH->DR = xFFFFFFFF
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000001, CMD_END= 1, KEY_ERR= 0, ACC_ERR=0, ADDR_ERR= 0
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@ target address: x00200800
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======= FMC Regs ====
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FLASH->CMD = xA5EC0123
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FLASH->ISR = x00000000
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FLASH->AR = x00200800
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000001, CMD_END= 1, KEY_ERR= 0, ACC_ERR=0, ADDR_ERR= 0
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## Case: Address error flag
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@ target address: x00008200
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======= FMC Regs ====
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FLASH->CMD = xA5A50123
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FLASH->ISR = x00000008
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FLASH->AR = x00000200
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000008, CMD_END= 0, KEY_ERR= 0, ACC_ERR=0, ADDR_ERR= 1
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@ target address: x00202200
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======= FMC Regs ====
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FLASH->CMD = xA5EC0123
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FLASH->ISR = x00000008
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FLASH->AR = x00202200
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000008, CMD_END= 0, KEY_ERR= 0, ACC_ERR=0, ADDR_ERR= 1
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## Case: Access error flag
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@ target address: x00004000
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======= FMC Regs ====
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FLASH->CMD = xA5A50023
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FLASH->ISR = x00000000
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FLASH->AR = x00004000
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000004, CMD_END= 0, KEY_ERR= 0, ACC_ERR=1, ADDR_ERR= 0
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## Case: Key error flag
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@ target address: x00004000
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======= FMC Regs ====
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FLASH->CMD = xA5EC0123
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FLASH->ISR = x00000000
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FLASH->AR = x00004000
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000002, CMD_END= 0, KEY_ERR= 1, ACC_ERR=0, ADDR_ERR= 0
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@ target address: x00200800
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======= FMC Regs ====
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FLASH->CMD = xA5A50123
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FLASH->ISR = x00000000
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FLASH->AR = x00200800
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FLASH->DR = x11223344
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FLASH->ACM = x00000000
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FLASH->DIV = x00000030
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--- After FMC idle ----
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FLASH->ISR: 0x00000002, CMD_END= 0, KEY_ERR= 1, ACC_ERR=0, ADDR_ERR= 0
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```
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