RE: Flashing nRF51 with OpenOCD on Raspberry Pi

Ronaldo Pace — Mon, 17 Jul 2017 09:30:43 GMT

The pointer to fix this was from the question I posted on StackOverflow: stackoverflow.com/.../906362

The main point was to adjust it to the right speed coefficient for the PI 3. That means, for other PIs you'll have to adjust coeffs and peripheral base, as per table:

 # Raspi2 and Raspi3 peripheral_base address
 bcm2835gpio_peripheral_base 0x3F000000
 
 # Raspi1 peripheral_base address
 bcm2835gpio_peripheral_base 0x20000000
 
 # Raspi3 BCM2837 (1200Mhz): 
 bcm2835gpio_speed_coeffs 194938 48
 
 # Raspi2 BCM2836 (900Mhz):
 bcm2835gpio_speed_coeffs 146203 36
 
 # Raspi1 BCM2835: (700Mhz)
 bcm2835gpio_speed_coeffs 113714 28

We have several OpenOCD cfg script files (to execute flash, erase, reset or check status on the nRF51 connected on pins 20,21 and on pins 30, 31). Below is one of the scripts:

 # pi interface
 interface bcm2835gpio
 bcm2835gpio_peripheral_base 0x3F000000
 bcm2835gpio_swd_nums 20 21
 bcm2835gpio_speed_coeffs 194938 48
 bcm2835gpio_srst_num 18
 reset_config srst_only srst_push_pull
 
 # transport
 transport select swd
 
 # target
 set WORKAREASIZE 0
 set CHIPNAME nrf51822
 source [find target/nrf51.cfg]
 reset_config srst_only srst_nogate
 adapter_nsrst_delay 100
 adapter_nsrst_assert_width 100
 
 # execution
 init
 targets
 halt
 nrf51 mass_erase
 flash write_image <full_file_path>.hex 0
 reset halt
 targets
 verify_image <full_file_path>.hex 0
 reset run
 targets
 exit

RE: Flashing nRF51 with OpenOCD on Raspberry Pi

Ronaldo Pace — Mon, 17 Jul 2017 09:23:15 GMT

Hi. Yes I did. I'll write it as an answer now.

RE: Flashing nRF51 with OpenOCD on Raspberry Pi

Shay Ohayon — Sun, 16 Jul 2017 12:58:58 GMT

Did you figure this one out?