----------------------------------------------------------------------
@@@@Interface2021N12
@@@@YpCPicoDACmSŁn̐
@@@@_E[hEf[^
@@@@IF2112DAC
@@@@InterfaceҏW
@@@@CQo()
@@@@JF2021N1025
----------------------------------------------------------------------
====================================
_E[hET[rXpҊe
====================================
@xCǂCɂ肪Ƃ܂D
@̂т̓_E[hET[rXpCɂ肪Ƃ܂D
@M҂̂ӂɂC{L̊֘Af[^̃A[JCuɎ^܂D

================
Tv
================
@̃A[JCuɂ́C\̋L̒ō쐬vOEt@Cf[^Et@C^Ă܂D
@ڂ͊YLQƂĂD
@A[JCúCZIP`ɂĈkĂ܂D

================
mF
================
@f[^Et@C͕M҂̌œmFς݂łD

===========
쌠
===========
@^vOCf[^уhLgȂǂ̒쌠́Ce쌠ҁiȂ킿Mҁjɂ܂D
@Copyright (C) 2021 geachlab
@Copyright (C) 2021 Yasushi Maruishi

============
Ɛ
============
(1)vOf[^̎gpɂCgp҂ɑƂĂC쌠҂Ƃbpo()́C̐ӔC𕉂܂D
(2)vOf[^ɃoO⌇ׂƂĂC쌠҂Ƃbpo()́CCǂ̋`𕉂܂D

=================

=================
1. uf2t@CgvȌݕ@
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
{e̎́AYpCPico̊JZbgAbvȂĂAYt̃RpC
ςݎst@C𗘗pĎ葁Ƃ\łD

菇1FRpCςݎst@C肷
{tH_ɂȉuf2t@CRpCς݂̎st@CłD

File Name               fڍ  YpCPico DACL
--------------------------------------------------------------------------------------------
pico_1bit_dac.uf2       2021/ 8 48kHz1`bvōĐ! USBI[fBIDAC̐
pico_1bit_dac_4844.uf2  2021/11 44.1kHz/48kHzΉ! TvOE[g؂ւ@\̎
pico_1bit_dac_NR.uf2    2021/12 mCYጸҁc3ϒo4rbg


菇2FPCPico USBڑ
PicoBOOTSEL {^ȂUSB P[uPC Ɛڑ܂D

菇3Fst@C
菇2̕@Pico ڑƁCPC ɁuRPI-RP2vƂ̂̃hCuo܂D
̃hCuɃGNXv[[ȂǂŁA菇Pœ肵 pico_1bit_dac_xxx.uf2 hbOhbv܂D
hbOhbvĂ琔bPCɐVI[fBIEfoCXFAYpC
Pico DAC  USB Audio DACƂċ@\܂D


2. \tgEFÅJ
~~~~~~~~~~~~~~~~~~~~~~~~~
{Lł́AhLgGetting started with Raspberry Pi Pico
(https://projects.raspberrypi.org/en/projects/getting-started-with-the-pico)
Chapter 1.ŏЉĂ Quick Pico Setup (ȉ̎菇)sYx[E
pC4ɂăRpCmFĂ܂D

$ wget https://raw.githubusercontent.com/raspberrypi/pico-setup/master/pico_setup.sh
$ chmod +x pico_setup.sh
$ ./pico_setup.sh

\[XR[h̓
{tH_ɂȉzipt@C\[XR[hꎮłD𓀌̃tH_
\[XR[hzuĂ܂D

cq_raspi_pico.zip

rh@
̎菇ŃrhƁARpC̍œKLReleaserhɂȂ܂D
Debugrhł͏ԂɍȂ߁ADebugw肵ȂłD

$ cd ~/pico
$ unzip cq_raspi_pico.zip        _E[hT[rXœ肵t@CWJ
$ cd cq_raspi_pico               WJς݃tH_ֈړ
$ mkdir -p build && cd build     buildfBNg쐬ړ
$ cmake -DPICO_COPY_TO_RAM=1 ..  rhpݒ RAMŎs悤ɂ
$ cd pico_1bit_dac               rhfBNgɈړ
$ make -j4                       4ŃRpCs

rhɏIƁA/home/pi/pico/cq_raspi_pico/build/pico_1bit_dac_xxx.uf2
܂D1D̎菇 YpC Pico DACɏł݂ĂD
