Dear nuttx team, I'm working in my very little spare time on the porting of nuttx to DA1470 Renesas MCU on a da1470x_pro_dev_kit. This is my very first port, so it has taken me a while to dig into and understand how NuttX brings up a new architecture (and I scratched only the surface). The DA1470 series is quite a complicated tech, where renesas implemented a lot of peripherals in one single package. The memory allocation is complex too. https://www.renesas.com/en/products/da14706
You can find my current work-in-progress here: https://github.com/AlmAck/nuttx/tree/da1470x The overall a basic implementation status is: gpio - OK serial - write only (no IRQ) PMU - base functions to manage the buck/dcdc Clock - base functions to set clock bus It tooks a while to have a serial connection, I see the boot process succeed and enters nx_start() Unfortunately, that's where the joy stops, I’m hitting the following issue: dump_assert_info: Current Version: NuttX 12.10.0 e2bc4cd83b-dirty Aug 7 > 2025 21:58:21 arm > > dump_assert_info: Assertion failed panic: at file: > armv8-m/arm_hardfault.c:147 task: Idle_Task process: Kernel 0x1ee5 > > up_dump_register: R0: 00000002 R1: 20012688 R2: 00000000 R3: 00000001 > > up_dump_register: R4: 00000000 R5: 00000000 R6: 00000000 FP: 2001268c > > up_dump_register: R8: 2857ae40 SB: b7de4573 SL: 20173000 R11: 00000000 > > up_dump_register: IP: 00000000 SP: 20012688 LR: 00002e5d PC: 00002e82 > > up_dump_register: xPSR: 29000200 BASEPRI: 00000080 CONTROL: 00000000 > > up_dump_register: EXC_RETURN: ffffffb8 > > dump_stackinfo: User Stack: > > dump_stackinfo: base: 0x20011708 > > dump_stackinfo: size: 00004080 > > dump_stackinfo: sp: 0x20012688 > > stack_dump: 0x20012668: 00000002 20012688 00000000 00000001 00000000 > 00002e5d 00002e82 29000200 > > stack_dump: 0x20012688: 00002e5d 00000000 200106a0 00001000 00000000 > 00000000 00000080 000126ac > > stack_dump: 0x200126a8: 00000000 00000000 000020d7 200126bc 00002029 > 00000000 000fd908 200126f8 > > stack_dump: 0x200126c8: 00000001 200126dc 000001cb 000fd908 200126f8 > 000fd908 200126f8 20010370 > > stack_dump: 0x200126e8: 00027cd8 200126f4 00000000 00000000 00000000 > 00000000 00000000 00000000 > > dump_tasks: PID GROUP PRI POLICY TYPE NPX STATE EVENT SIGMASK STACKBASE > STACKSIZE COMMAND > > dump_task: 0 0 0 FIFO Kthread - Ready 0000000000000000 0x20011708 4080 > Idle_Task > > dump_task: 1 1 100 RR Task - Running 0000000000000000 0x20012e10 4064 nsh > The code stops at: > arm-none-eabi-addr2line -e nuttx -f -C 0x00002e82 0x00002e5d > sched_unlock > nuttx/sched/sched/sched_unlock.c:104 > sched_unlock > nuttx/sched/sched/sched_unlock.c:90 > I'm running out of ideas, memory, heap should be there. Do you have any suggestions on where I should look next? Thank you so much, Luca Giambonini
