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| author | Gregory Nutt <gnutt@nuttx.org> | 2014-07-17 17:57:57 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-07-17 17:57:57 -0600 |
| commit | 1687baef2ec89857283e4cf481f3f6b575af1f73 (patch) | |
| tree | a6a309d879f0226e84b6c1d371d95273956cd2d0 /nuttx/configs/sama5d4-ek/README.txt | |
| parent | 2ce31dc734c5095ccdc07033afb3c59af7b406f6 (diff) | |
| download | px4-nuttx-1687baef2ec89857283e4cf481f3f6b575af1f73.tar.gz px4-nuttx-1687baef2ec89857283e4cf481f3f6b575af1f73.tar.bz2 px4-nuttx-1687baef2ec89857283e4cf481f3f6b575af1f73.zip | |
WM8904: A few initial definitions for for the SAMA5D4-EK
Diffstat (limited to 'nuttx/configs/sama5d4-ek/README.txt')
| -rw-r--r-- | nuttx/configs/sama5d4-ek/README.txt | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/nuttx/configs/sama5d4-ek/README.txt b/nuttx/configs/sama5d4-ek/README.txt index 1bb48696d..9279ceaa6 100644 --- a/nuttx/configs/sama5d4-ek/README.txt +++ b/nuttx/configs/sama5d4-ek/README.txt @@ -92,6 +92,7 @@ Contents - Watchdog Timer - TRNG and /dev/random - I2S Audio Support + - WM8904 Support - TM7000 LCD/Touchscreen - SAMA4D4-EK Configuration Options - Configurations @@ -2799,6 +2800,26 @@ I2S Audio Support Library Routines CONFIG_SCHED_WORKQUEUE=y : Driver needs work queue support +WM8904 Support +============== + + SAMA5D4 Interface + ---- ------------------ ---------------- ---------- --------------------------------------- + PIO USAGE BOARD SIGNAL WM8904 PIN NOTE + ---- ------------------ ---------------- ---------- --------------------------------------- + PA30 TWD0 AUDIO_TWD0_PA30 SDA Pulled up, See J23 note below + PA31 TWCK0 AUDIO_TWCK0_PA31 SCLK Pulled up + PB10 AUDIO_PCK2/EXP AUDIO_PCK2_PB10 MCLK + PB27 AUDIO/HDMI_TK0/EXP AUDIO_TK0_PB27 BCLK/GPIO4 Note TK0 and RK0 are mutually exclusive + PB26 AUDIO_RK0 AUDIO_RK0_PB26 " "/" " " " " " " " " " " " " " " " + PB30 AUDIO_RF/ZIG_TWCK2 AUDIO_RF0_PB30 LRCLK Note TF0 and RF0 are mutually exclusive + PB31 AUDIO/HDMI_TF0/EXP AUDIO_TF0_PB31 " " " " " " " " " " " " " " " " + PB29 AUDIO_RD0/ZIG_TWD2 AUDIO_RD0_PB29 ADCDAT + PB28 AUDIO/HDMI_TD0/EXP AUDIO_TD0_PB28 ACDAT + PE4 AUDIO_IRQ AUDIO_IRQ_PE4 IRQ/GPIO1 Audio interrupt + ---- ------------------ ---------------- ---------- --------------------------------------- + Note that jumper J23 must be closed to connect AUDIO_TWD0_PA30 + TM7000 LCD/Touchscreen ====================== @@ -3480,6 +3501,14 @@ Configurations If you don't plan on using the debug features, then by all means disable this feature and save 16KiB of RAM! + NOTE: There is an issue with capturing data in the RAMLOG: If + the system crashes, all of the crash dump information will into + the RAMLOG and you will be unable to access it! You can tell that + the system has crashed because (a) it will be unresponsive and (b) + the RED LED will be blinking at about 2Hz. + + That is another good reason to disable the RAMLOG! + 5. This configuration executes out of SDRAM flash and is loaded into SDRAM from NAND, Serial DataFlash, SD card or from a TFTPC sever via U-Boot, BareBox, or the DRAMBOOT configuration described above. Data |