Hi Bernd, Did you disable the serial console?
CONFIG_NO_SERIAL_CONSOLE=y (Device Drivers -> Serial Driver Support -> Serial console (No serial console) ). BR, Alan On 11/3/20, Bernd Walter <ti...@cicely7.cicely.de> wrote: > On Tue, Nov 03, 2020 at 03:34:46PM +0100, Bernd Walter wrote: >> On Mon, Nov 02, 2020 at 03:09:12PM +0100, Bernd Walter wrote: >> > On Mon, Nov 02, 2020 at 10:17:41AM -0300, Alan Carvalho de Assis wrote: >> > > This should be a better idea because you will have 32KB of RAM. They >> > > after getting it working you can remove not necessary features to >> > > eventually get it working reliable on 16KB RAM. >> >> Ok - on the Zero and with predefined config (plus options to enable ADC >> and >> the workarround for the include files), it works. >> Have to see if the problem just didn't appear or if it is somehow related >> to my setup. > > Wow - that was very unexpected. > I've stripped my code to nearly nothing. > Stack sizes had been restored to original NuttX values > board_app_initialize did (almost) nothing. > My main only called boardctl(BOARDIOC_INIT, 0); and then in config_init() > It hang in stat because of a broken inode table. > > This is my config_init btw: > static > void > config_init() > { > #ifdef HAVE_W25 > FILE *f; > ssize_t len; > > struct stat st; > if (stat(CONFIGFILE, &st) == 0) { > len = st.st_size; > f = fopen(CONFIGFILE, "rb"); > if (f != NULL) { > syslog(LOG_NOTICE, "json reading %d bytes\n", len); > char *data = malloc(len + 1); > if (data != NULL) { > len = fread(data, 1, len, f); > if (len >= 0) { > data[len] = '\0'; > } else { > free(data); > data = NULL; > } > } > fclose(f); > > if (data != NULL) { > syslog(LOG_NOTICE, "json data read: %s\n", > data); > json_config = cJSON_Parse(data); > free(data); > } > } > } > #endif > if (json_config == NULL) { > syslog(LOG_NOTICE, "reseting json config\n"); > json_config = cJSON_CreateObject(); > } > } > > Nothing fancy - HAVE_W25 was set, but the mounting code in > board_app_initialize() disabled. > > And then there it was, the only thing left in board_app_initialize(): > printf("test\n\r"); > > I do not have a console and obviously stdio wasn't linked to /dev/null. > This wasn't a problem on my other console less board using older NuttX, but > with memory corruption I also just might have been lucky. > > Is there any example on how to link /dev/null? > > -- > B.Walter <be...@bwct.de> http://www.bwct.de > Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm. >