I am trying to use the AWS FOTA library. It correctly downloads the image at 100% but always ends with a MPU Fault on the downloader thread.
I set the stack size at the maximum value (CONFIG_DOWNLOADER_STACK_SIZE=8192) and it doesn't solve the issue.
[00:03:24.600,708] <inf> downloader: Downloaded 430848/430959 bytes (99%) [00:03:25.757,324] <wrn> modem_cmux: Frame FCS error [00:03:25.757,354] <wrn> modem_cmux: Dropped frame [00:03:27.200,286] <dbg> net_if: net_if_tx: (rx_q[0]): Processing (pkt 0x200345fc, prio 0) network packet iface 1 (0x200038ec) [00:03:27.200,408] <dbg> net_sock: zsock_received_cb: (rx_q[0]): ctx=0x20009308, pkt=0x2003497c, st=0, user_data=0 [00:03:27.201,324] <inf> downloader: Downloaded 430959/430959 bytes (100%) [00:03:27.201,354] <inf> downloader: Download complete [00:03:27.201,416] <dbg> net_sock: zsock_close_ctx: (downloader): close: ctx=0x20009308, fd=4 [00:03:27.201,751] <dbg> net_if: net_if_tx: (downloader): Processing (pkt 0x200345bc, prio 0) network packet iface 1 (0x200038ec) [00:03:27.290,161] <inf> dfu_target_mcuboot: MCUBoot image-0 upgrade scheduled. Reset device to apply [00:03:27.290,161] <dbg> aws_fota: http_fota_handler: FOTA_DOWNLOAD_EVT_FINISHED [00:03:27.290,191] <dbg> aws_iot: aws_fota_cb_handler: AWS_FOTA_EVT_DL_PROGRESS, (100%) [00:03:27.290,191] <inf> aws_iot_sample: AWS_IOT_EVT_FOTA_DL_PROGRESS, (100%) [00:03:27.290,252] <dbg> aws_fota: update_job_execution: update_job_execution, status: 2, version_number: 2 [00:03:27.290,405] <dbg> net_mqtt: mqtt_publish: (downloader): [CID 0x2000b574]:[State 0x06]: >> Topic size 0x0000002b, Data size 0x00000055 [00:03:27.290,466] <err> os: ***** MPU FAULT ***** [00:03:27.290,466] <err> os: Stacking error (context area might be not valid) [00:03:27.290,466] <err> os: Data Access Violation [00:03:27.290,496] <err> os: MMFAR Address: 0x20003df0 [00:03:27.290,496] <err> os: r0/a1: 0x00000000 r1/a2: 0x00000000 r2/a3: 0x00000000 [00:03:27.290,527] <err> os: r3/a4: 0x00000000 r12/ip: 0x00000000 r14/lr: 0x00000000 [00:03:27.290,527] <err> os: xpsr: 0x00000000 [00:03:27.290,557] <err> os: Faulting instruction address (r15/pc): 0x00000000 [00:03:27.290,588] <err> os: >>> ZEPHYR FATAL ERROR 2: Stack overflow on CPU 0 [00:03:27.290,618] <err> os: Current thread: 0x20003cf0 (downloader) [00:03:27.539,947] <err> os: Halting system
Please help.
Full code: https://github.com/olalonde/ncs-l9-e7/tree/modem-port
I also tried chaning the downloader Kconfig to allow a larger stack size but that didn't solve the issue.
