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After programming S110 SoftDevice, I get "Erase Failed! Error: Download Failed - Cortex M0

rbunn

I have a 51822-DK board. I have followed all of the instructions to set up the environment. Loaded all NRF tools, Keil v 5, install SDK. I began working on the examples. I was able to run the blinky example and load the chip. Then I programmed the S110 soft device. I loaded up the heart rate monitor example as suggested in the SDK documentation (using the pack installer) . I was able to successfully compile it but not able to load it onto the chip. I've wasted 2 days on this. Please help!

Here is some background on what I have already tried. Checked target and it is set to S110. Checked memory target. Checked programming algorithms. See attached screenshots of configuration. See screenshots for configuration.

Debug tab Device tab Algorithm setting Target tab

I am getting the following output when trying to upload:

Rebuild target 'nrf51422_xxac_s110' compiling main.c... compiling bsp.c... assembling arm_startup_nrf51.s... compiling system_nrf51.c... compiling ble_bas.c... compiling ble_dis.c... compiling ble_hrs.c... compiling ble_srv_common.c... compiling device_manager_peripheral.c... compiling ble_advdata.c... compiling ble_conn_params.c... compiling nrf_delay.c... compiling app_uart_fifo.c... compiling pstorage.c... compiling app_button.c... compiling app_error.c... compiling app_fifo.c... compiling app_gpiote.c... compiling app_scheduler.c... compiling app_timer.c... compiling app_trace.c... compiling ble_sensorsim.c... compiling nrf_assert.c... compiling retarget.c... compiling softdevice_handler.c... linking... Program Size: Code=15176 RO-data=332 RW-data=328 ZI-data=3648
FromELF: creating hex file... "._build\nrf51422_xxac_s110.axf" - 0 Error(s), 0 Warning(s). Build Time Elapsed: 00:00:14 Load "C:\Users\Rona\Documents\Development Kit Files\Examples\ble_peripheral\ble_app_hrs\pca10028\s110\arm5\_build\nrf51422_xxac_s110.axf" Set JLink Project File to "C:\Users\Rona\Documents\Development Kit Files\Examples\ble_peripheral\ble_app_hrs\pca10028\s110\arm5\JLinkSettings.ini"

  • JLink Info: Device "NRF51822_XXAC" selected.

JLink info:

DLL: V4.96d, compiled Jan 29 2015 11:45:37 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 28 2014 10:32:04 Hardware: V1.00 S/N : 681341448

  • JLink Info: Found SWD-DP with ID 0x0BB11477
  • JLink Info: Found Cortex-M0 r0p0, Little endian.
  • JLink Info: FPUnit: 4 code (BP) slots and 0 literal slots ROMTableAddr = 0xF0000003

Target info:

Device: nRF51822_xxAC VTarget = 3.300V State of Pins: TCK: 0, TDI: 1, TDO: 1, TMS: 1, TRES: 1, TRST: 1 Hardware-Breakpoints: 4 Software-Breakpoints: 8192 Watchpoints: 2 JTAG speed: 1000 kHz

Erase Failed! Error: Flash Download failed - "Cortex-M0" Flash Load finished at 19:22:06

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    In a last ditch effort, I kept looking. I found another post that focused me back on the memory setting. I erased the flash with nrf studio and reprogrammed it. I noticed that the memory location changed in the application section of the window. I changed the memory in the target settings in Keil and recompiled it. I was able to upload. I'm not sure if it is fixed as the new application doesn't seem to work but I'll post that as a new question if I can't figure it out.

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    In a last ditch effort, I kept looking. I found another post that focused me back on the memory setting. I erased the flash with nrf studio and reprogrammed it. I noticed that the memory location changed in the application section of the window. I changed the memory in the target settings in Keil and recompiled it. I was able to upload. I'm not sure if it is fixed as the new application doesn't seem to work but I'll post that as a new question if I can't figure it out.

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