在 Raspberry Pi 4 上使用 OpenOCD 编程 STM32F4

如何解决在 Raspberry Pi 4 上使用 OpenOCD 编程 STM32F4

我正在尝试通过 SWD 接口在 STM32F407 上刷新引导加载程序，有问题的板是 Makerbase Robin Nano v3，这是一个 3D 打印机控制器板。

我的 OpenOCD 在我的 RaspBerry Pi 4 上运行良好，我能够读取内部存储器的扇区

问题是我不会写，我不知道为什么。

我尝试了一个简单的测试

READ  -> stm32f4.cpu mdb 0x8000000 -> output: 0xFF
WRITE -> stm32f4.cpu mwb 0x8000000 0xAA -> no output
READ  -> stm32f4.cpu mdb 0x8000000 -> output: 0xFF // didn't change

写入特定字节似乎不起作用。

如果我尝试使用 load_image 对其进行编程，这就是输出

> load_image nano_v3_bootloader.bin 0x8000000     
SWD DPIDR 0x2ba01477
Failed to write memory and,additionally,Failed to find out where

SWD DPIDR 0x2ba01477

如果我尝试使用 program 对其进行编程，这就是输出

> program nano_v3_bootloader.bin 0x8000000
target halted due to debug-request,current mode: Thread 
xPSR: 0x01000000 pc: 0xfffffffe msp: 0xfffffffc
** Programming Started **
SWD DPIDR 0xdeadbeef
Failed to write memory and,Failed to find out where
error writing to flash at address 0x08000000 at offset 0x00000000
embedded:startup.tcl:308: Error: auto erase enabled

at file "embedded:startup.tcl",line 308

我是 ARM 的新手，我的猜测是引导加载程序可能被锁定（我尝试使用 stm32f4x unlock 0 解锁它，似乎没有什么区别），或者我正在以错误的顺序做某事或在某处遗漏了一步。

如果有人能帮我弄清楚我做错了什么，我将不胜感激

这是我的 openocd.cfg

source [find interface/raspBerrypi2-native.cfg]
transport select swd

set CHIPNAME stm32f4
source [find target/stm32f4x.cfg]

# did not yet manage to make a working setup using srst
#reset_config srst_only
reset_config  srst_nogate

adapter_nsrst_delay 100
adapter_nsrst_assert_width 100

init
targets
reset halt

这是我的 raspBerrypi2_native.cfg

#
# Config for using RaspBerry Pi's expansion header
#
# This is best used with a fast enough buffer but also
# is suitable for direct connection if the target voltage
# matches RPi's 3.3V and the cable is short enough.
#
# Do not forget the GND connection,pin 6 of the expansion header.
#

adapter driver bcm2835gpio

bcm2835gpio_peripheral_base 0xFE000000

# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
# These depend on system clock,calibrated for stock 700MHz
# bcm2835gpio_speed SPEED_COEFF SPEED_OFFSET
bcm2835gpio_speed_coeffs 236181 60

# Each of the JTAG lines need a gpio number set: tck tms tdi tdo
# Header pin numbers: 23 22 19 21
bcm2835gpio_jtag_nums 11 25 10 9

# Each of the SWD lines need a gpio number set: swclk swdio
# Header pin numbers: 23 22
bcm2835gpio_swd_nums 25 24

# If you define trst or srst,use appropriate reset_config
# Header pin numbers: TRST - 26,SRST - 18

# bcm2835gpio_trst_num 7
# reset_config trst_only

bcm2835gpio_srst_num 18
reset_config srst_only srst_push_pull

# or if you have both connected,# reset_config trst_and_srst srst_push_pull

解决方法

运行这些命令修复了问题

> flash erase_sector 0 0 11 // this will erase bank 0
> flash write_bank 0 nano_v3_bootloader.bin 0 // this will write the bin file to the bank 0