Hi Roberto, Enable the DEBUG ASSERTION to see where the crash is happening?
What you get when you run: nsh> spi bus Maybe you passing an invalid bus number. BR, Alan On 3/4/22, Roberto Bucher <roberto.buc...@supsi.ch> wrote: > Thanks Alan, but the main problem is that this test gives me an error by > the execution on my STM32F7 nucleo-144 board... > > nsh> spi exch -b 2 -x 4 aabbccdd > Seup_assert: Assertion failed at file:armv7-m/arm_hardfault.c line: 174 > arm_registerdump: R0: 00000000 R1: 2001a334 R2: 00000001 R3: 00002201 > arm_registerdump: R4: 00000000 R5: 00002201 R6: 2004f774 FP: 2004f770 > arm_registerdump: R8: 2001a380 SB: 00000005 SL: 2001a358 R11: 2001a35c > arm_registerdump: IP: 00000018 SP: 2001a2b0 LR: 08016f63 PC: 0801700c > arm_registerdump: xPSR: 61000000 PRIMASK: 00000000 CONTROL: 00000000 > arm_registerdump: EXC_RETURN: ffffffe9 > arm_dump_stack: User Stack: > arm_dump_stack: sp: 2001a170 > arm_dump_stack: base: 20019c70 > arm_dump_stack: size: 000007c8 > arm_stackdump: 2001a160: 20019c70 2001a170 20011d50 0801b447 00000000 > 00000000 0801700c 00000000 > arm_stackdump: 2001a180: 00000000 08021224 0801700a 080236b8 2004f774 > 2004f770 2 > .... > > BR > > Roberto > > On 3/4/22 12:29, Alan Carvalho de Assis wrote: >> Hi Roberto, >> >> We have the SPI Tool that does exactly what you want: >> >> Application Configuration ---> >> System Libraries and NSH Add-Ons ---> >> [*] SPI tool ---> >> >> BR, >> >> Alan >> >> On 3/4/22, Roberto Bucher <roberto.buc...@supsi.ch> wrote: >>> Hi >>> >>> where can I found a simple example that send n bytes to the SPI and >>> receive m bytes? >>> >>> I can now see the /dev/spi but using simple methods like open and write >>> doesn't give me any signal on the bus... >>> >>> Thanks in advance >>> >>> Roberto >>> >>> > >
