Hello,
Actually, looking closer at the samd21 datasheet, my led pin can be
configured in SPI MOSI.
In board/samd2l2/arduino-m0/src/ I added sam_ws2812.c, sam_ws2812.h which
are a adapted copy of the stm32 version.
Everything compiles but on "nsh> ls /dev", I can see that the led device
(/dev/leds0) is not here.
I would like to debug with Syslog but I can't get any error messages in the
console.
I am expecting to get error messages in the console but I get only 'nsh> ABD
Now my bringup.c is looking like:
#ifdef CONFIG_WS2812
/* Configure and initialize the WS2812 LEDs. */
#pragma message ("Configure and initialize the WS2812 LEDs with spi driver")
ret = board_ws2812_initialize(0, 2, CONFIG_WS2812_LED_COUNT);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: board_ws2812_initialize() failed: %d\n", ret);
}
#endif
I setup the board.h with sercom2 to be SPI:
/* SERCOM2 SPI is available on EXT2
*
* PIN PORT SERCOM FUNCTION
* --- ------------------ -----------
* ** PA17 SERCOM2 PAD2 SPI SS
* ** PA15 SERCOM2 PAD3 SPI MOSI
* ** PA8 SERCOM2 PAD0 SPI MISO
* ** PA9 SERCOM2 PAD1 SPI SCK
*/
#define BOARD_SERCOM2_GCLKGEN 0
#define BOARD_SERCOM2_SLOW_GCLKGEN BOARD_SERCOM05_SLOW_GCLKGEN
#define BOARD_SERCOM2_MUXCONFIG (SPI_CTRLA_DOPO_DOPAD231 | SPI_CTRLA_DIPAD0)
#define BOARD_SERCOM2_PINMAP_PAD0 PORT_SERCOM2_PAD0_2 /* SPI_MISO */
#define BOARD_SERCOM2_PINMAP_PAD2 0 /* microSD_SS */
#define BOARD_SERCOM2_PINMAP_PAD3 PORT_SERCOM2_PAD3_1 /* SPI_MOSI */
#define BOARD_SERCOM2_PINMAP_PAD1 PORT_SERCOM2_PAD1_2 /* SPI_SCK */
#define BOARD_SERCOM2_FREQUENCY BOARD_GCLK0_FREQUENCY
In menuconfig, I activated debug Syslog in
Build Setup->Debug Option:
(0) Fortify Source
[*] Define NDEBUG globally
[*] Enable Debug Features
*** Debug SYSLOG Output Controls ***
[*] Enable Error Output
[*] Enable Warnings Output
[*] Enable Informational Debug Output
[ ] Enable Debug Assertions
*** Subsystem Debug Options ***
[ ] File System Debug Features
[ ] Graphics Debug Features
[ ] C Library Debug Features
[ ] Memory Manager Debug Features
[ ] Power-related Debug Features
[ ] Battery-related Debug Features
[ ] Scheduler Debug Features
*** OS Function Debug Options ***
[ ] Interrupt Controller Debug Features
*** Driver Debug Options ***
[*] Low-level LED Debug Features
[*] LED Driver Error Output
[*] LED Driver Warnings Output
[*] LED Driver Informational Output
[*] GPIO Debug Features
[*] GPIO Error Output
[*] GPIO Warnings Output
[*] GPIO Informational Output
[*] SPI Debug Features
[*] SPI Error Output
[*] SPI Warnings Output
[*] SPI Informational Output
[ ] Timer Debug Features
[ ] IPC (Interprocessor communication) Debug Features
[ ] Stack coloration
[ ] Compiler stack canaries
[ ] Generate stack usage information
(0) Detect use of large stack variables
[*] Generate Debug Symbols
Device Driver -> System logging option:
*** SYSLOG options ***
(1) Maximum SYSLOG channels
[ ] RAM log device support
[ ] Use buffered output
[ ] Use interrupt buffer
*** Formatting options ***
[ ] Prepend timestamp to syslog message
[ ] Prepend priority to syslog message
[ ] Prepend process name to syslog message
[ ] Prepend process ID to syslog message
[ ] Prepend prefix to syslog message
[ ] Colored syslog output
*** SYSLOG channels ***
(/dev/ttyS0) System log device
[ ] Log to a character device
[ ] Log to stream
[*] Log to /dev/console
[*] Default SYSLOG device
[ ] SYSLOG rpmsg server character device
[ ] Syslog file output ----
[*] SYSLOG character device
[ ] SYSLOG IOCTL support
Regards,
Bertrand.
