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Steven Dan
2025-12-11 09:43:42 +08:00
commit d8b2974133
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33
lib_spdif/examples/app_spdif_rx_example/Makefile Normal file
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# The TARGET variable determines what target system the application is
# compiled for. It either refers to an XN file in the source directories
# or a valid argument for the --target option when compiling.
TARGET = xk-audio-316-mc.xn
# The APP_NAME variable determines the name of the final .xe file. It should
# not include the .xe postfix. If left blank the name will default to
# the project name
APP_NAME = app_example_rx
# The flags passed to xcc when building the application
# You can also set the following to override flags for a particular language:
#
# XCC_XC_FLAGS, XCC_C_FLAGS, XCC_ASM_FLAGS, XCC_CPP_FLAGS
#
# If the variable XCC_MAP_FLAGS is set it overrides the flags passed to
# xcc for the final link (mapping) stage.
XCC_FLAGS = -O2 -g -DDEBUG_PRINT_ENABLE=1
# The USED_MODULES variable lists other module used by the application.
USED_MODULES = lib_spdif lib_logging
#=============================================================================
# The following part of the Makefile includes the common build infrastructure
# for compiling XMOS applications. You should not need to edit below here.
XMOS_MAKE_PATH ?= ../..
include $(XMOS_MAKE_PATH)/xcommon/module_xcommon/build/Makefile.common

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lib_spdif/examples/app_spdif_rx_example/basic.xscope Normal file
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<xSCOPEconfig ioMode="basic" enabled="true">
</xSCOPEconfig>

76
lib_spdif/examples/app_spdif_rx_example/src/main.xc Normal file
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// Copyright 2014-2023 XMOS LIMITED.
// This Software is subject to the terms of the XMOS Public Licence: Version 1.
#include <xs1.h>
#include <platform.h>
#include <stdint.h>
#include <stddef.h>
#include <spdif.h>
#include <debug_print.h>
on tile[0]: out port p_ctrl = XS1_PORT_8D;
on tile[0]: in port p_i2c_sda = XS1_PORT_1M;
on tile[0]: in port p_coax_rx = XS1_PORT_1N;
on tile[0]: in port p_opt_rx = XS1_PORT_1O;
on tile[0]: in port p_word_clk = XS1_PORT_1P;
on tile[0]: clock audio_clk = XS1_CLKBLK_1;
void handle_samples(streaming chanend c)
{
int32_t sample;
size_t index;
int32_t left_count = 0;
int32_t right_count = 0;
while(1)
{
select
{
case spdif_rx_sample(c, sample, index):
// sample contains the 24bit data
// You can process the audio data here
if (index == 0)
left_count++;
else
right_count++;
break;
}
int32_t total = left_count + right_count;
if (total % 10000 == 0)
{
debug_printf("Received %u left samples and %u right samples\n",
left_count,
right_count);
}
}
}
void board_setup(void)
{
// Define other tile 0 ports as inputs to avoid driving them when writing to 8 bit port.
p_i2c_sda :> void;
p_coax_rx :> void;
p_opt_rx :> void;
p_word_clk :> void;
// Drive control port to turn on 3V3 and set MCLK_DIR/EXT_PLL_SEL to select App PLL.
p_ctrl <: 0xA0;
// Wait for power supplies to be up and stable.
delay_milliseconds(10);
}
int main(void)
{
streaming chan c;
par {
on tile[0]: {
board_setup();
spdif_rx(c, p_coax_rx, audio_clk, 96000);
}
on tile[0]: handle_samples(c);
}
return 0;
}

92
lib_spdif/examples/app_spdif_rx_example/src/xk-audio-316-mc.xn Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<Network xmlns="http://www.xmos.com"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.xmos.com http://www.xmos.com">
<Type>Board</Type>
<Name>xcore.ai MC Audio Board</Name>
<Declarations>
<Declaration>tileref tile[2]</Declaration>
</Declarations>
<Packages>
<Package id="0" Type="XS3-UnA-1024-FB265">
<Nodes>
<Node Id="0" InPackageId="0" Type="XS3-L16A-1024" Oscillator="24MHz" SystemFrequency="600MHz" ReferenceFrequency="100MHz">
<Boot>
<Source Location="bootFlash"/>
</Boot>
<Tile Number="0" Reference="tile[0]">
<Port Location="XS1_PORT_1B" Name="PORT_SQI_CS"/>
<Port Location="XS1_PORT_1C" Name="PORT_SQI_SCLK"/>
<Port Location="XS1_PORT_4B" Name="PORT_SQI_SIO"/>
<!-- Various ctrl signals -->
<Port Location="XS1_PORT_8D" Name="PORT_CTRL"/>
<!-- I2C -->
<Port Location="XS1_PORT_1L" Name="PORT_I2C_SCL"/>
<Port Location="XS1_PORT_1M" Name="PORT_I2C_SDA"/>
<!-- Clocking -->
<Port Location="XS1_PORT_16B" Name="PORT_MCLK_COUNT"/>
<Port Location="XS1_PORT_1D" Name="PORT_MCLK_IN_USB"/>
<Port Location="XS1_PORT_1A" Name="PORT_PLL_REF"/>
<!-- Audio Ports: Digital -->
<Port Location="XS1_PORT_1O" Name="PORT_ADAT_IN"/> <!-- N: Coax O: Optical -->
<Port Location="XS1_PORT_1N" Name="PORT_SPDIF_IN"/> <!-- N: Coax O: Optical -->
</Tile>
<Tile Number="1" Reference="tile[1]">
<!-- Audio Ports: I2S -->
<Port Location="XS1_PORT_1D" Name="PORT_MCLK_IN"/>
<Port Location="XS1_PORT_1B" Name="PORT_I2S_LRCLK"/>
<Port Location="XS1_PORT_1C" Name="PORT_I2S_BCLK"/>
<Port Location="XS1_PORT_1P" Name="PORT_I2S_DAC0"/>
<port Location="XS1_PORT_1O" Name="PORT_I2S_DAC1"/>
<port Location="XS1_PORT_1N" Name="PORT_I2S_DAC2"/>
<port Location="XS1_PORT_1M" Name="PORT_I2S_DAC3"/>
<Port Location="XS1_PORT_1I" Name="PORT_I2S_ADC0"/>
<Port Location="XS1_PORT_1J" Name="PORT_I2S_ADC1"/>
<Port Location="XS1_PORT_1K" Name="PORT_I2S_ADC2"/>
<Port Location="XS1_PORT_1L" Name="PORT_I2S_ADC3"/>
<!-- Audio Ports: Digital -->
<Port Location="XS1_PORT_1G" Name="PORT_ADAT_OUT"/> <!-- A: Coax G: Optical -->
<Port Location="XS1_PORT_1A" Name="PORT_SPDIF_OUT"/> <!-- A: Coax G: Optical -->
<!-- MIDI -->
<Port Location="XS1_PORT_1F" Name="PORT_MIDI_IN"/>
<Port Location="XS1_PORT_4C" Name="PORT_MIDI_OUT"/> <!-- bit[0] -->
</Tile>
</Node>
</Nodes>
</Package>
</Packages>
<Nodes>
<Node Id="2" Type="device:" RoutingId="0x8000">
<Service Id="0" Proto="xscope_host_data(chanend c);">
<Chanend Identifier="c" end="3"/>
</Service>
</Node>
</Nodes>
<Links>
<Link Encoding="2wire" Delays="5clk" Flags="XSCOPE">
<LinkEndpoint NodeId="0" Link="XL0"/>
<LinkEndpoint NodeId="2" Chanend="1"/>
</Link>
</Links>
<ExternalDevices>
<Device NodeId="0" Tile="0" Class="SQIFlash" Name="bootFlash" PageSize="256" SectorSize="4096" NumPages="8192">
<Attribute Name="PORT_SQI_CS" Value="PORT_SQI_CS"/>
<Attribute Name="PORT_SQI_SCLK" Value="PORT_SQI_SCLK"/>
<Attribute Name="PORT_SQI_SIO" Value="PORT_SQI_SIO"/>
</Device>
</ExternalDevices>
<JTAGChain>
<JTAGDevice NodeId="0"/>
</JTAGChain>
</Network>