ZIO: Beginnings of a Sampled Input/Output API

CODEOWNERS

@@ -152,6 +152,7 @@
 /drivers/*/*xec*                          @franciscomunoz @albertofloyd @scottwcpg
 /drivers/wifi/                            @jukkar @tbursztyka @pfalcon
 /drivers/wifi/eswifi/                     @loicpoulain
+/drivers/zio/                             @bfrog
 /dts/arm/atmel/samr21.dtsi                @benpicco
 /dts/arm/st/                              @erwango
 /dts/arm/ti/cc13?2*                       @bwitherspoon
@@ -212,6 +213,7 @@
 /include/drivers/loapic.h                 @andrewboie
 /include/drivers/mvic.h                   @andrewboie
 /include/drivers/pcie/                    @gnuless
+/include/drivers/zio/                     @bfrog
 /include/drivers/serial/uart_ns16550.h    @gnuless
 /include/dt-bindings/clock/kinetis_scg.h  @henrikbrixandersen
 /include/dt-bindings/pcie/                @gnuless
@@ -244,6 +246,8 @@
 /include/toolchain.h                      @andrewboie @andyross @nashif
 /include/toolchain/                       @andrewboie @andyross
 /include/zephyr.h                         @andrewboie @andyross
+/include/zio.h                            @bfrog
+/include/zio/                             @bfrog
 /kernel/                                  @andrewboie @andyross
 /lib/gui/                                 @vanwinkeljan
 /lib/libc/                                @nashif
@@ -318,6 +322,7 @@
 /subsys/storage/                          @nvlsianpu
 /subsys/testsuite/                        @nashif
 /subsys/usb/                              @jfischer-phytec-iot @finikorg
+/subsys/zio/                              @bfrog
 /tests/                                   @nashif
 /tests/boards/native_posix/               @aescolar
 /tests/boards/intel_s1000_crb/            @dcpleung @sathishkuttan
@@ -340,6 +345,7 @@
 /tests/net/socket/                        @jukkar @tbursztyka @pfalcon
 /tests/subsys/fs/                         @nashif @wentongwu
 /tests/subsys/settings/                   @nvlsianpu
+/tests/subsys/zio/                        @bfrog
 
 # Get all docs reviewed
 *.rst                                     @dbkinder

drivers/CMakeLists.txt

@@ -33,6 +33,7 @@ add_subdirectory_if_kconfig(wifi)
 add_subdirectory_if_kconfig(can)
 add_subdirectory_if_kconfig(audio)
 add_subdirectory_if_kconfig(hwinfo)
+add_subdirectory_if_kconfig(zio)
 
 add_subdirectory_ifdef(CONFIG_FLASH_HAS_DRIVER_ENABLED flash)
 add_subdirectory_ifdef(CONFIG_SERIAL_HAS_DRIVER serial)

drivers/Kconfig

@@ -89,4 +89,7 @@ source "drivers/neural_net/Kconfig"
 
 source "drivers/hwinfo/Kconfig"
 
+source "drivers/zio/Kconfig"
+
+
 endmenu

drivers/zio/CMakeLists.txt

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: Apache-2.0
+
+add_subdirectory_ifdef(CONFIG_SYNTH         synth)

drivers/zio/Kconfig

@@ -0,0 +1,30 @@
+# Kconfig - zio configuration options
+
+#
+# Copyright (c) 2019 Thomas Burdick <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+menuconfig ZIO
+	bool "ZIO Drivers"
+	help
+	  Include zio drivers in system config
+
+if ZIO
+
+module = ZIO
+module-str = zio
+source "subsys/logging/Kconfig.template.log_config"
+
+config ZIO_INIT_PRIORITY
+	int "Zio init priority"
+	default 90
+	help
+	  Zio initialization priority.
+
+comment "Device Drivers"
+
+source "drivers/zio/synth/Kconfig"
+
+endif # ZIO

drivers/zio/synth/CMakeLists.txt

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+
+zephyr_library_sources_ifdef(CONFIG_SYNTH synth.c)

drivers/zio/synth/Kconfig

@@ -0,0 +1,56 @@
+
+# Copyright (c) 2019 Thomas Burdick <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+menuconfig SYNTH
+	bool "Synthesized Signal Generator"
+	help
+	  Enable zio driver for signal generator.
+
+if SYNTH
+
+config SYNTH_FIFO_SIZE
+	int "FIFO power of 2 size, pow(2,SYNTH_FIFO_SIZE), defaults to pow(2,9)=512"
+	default 9
+	depends on SYNTH
+	help
+	  The size of the internal FIFO for synthesized samples
+
+config SYNTH_SAMPLE_RATE
+	int "Samples to generate per second, defaults to 44.100kHz (CD sample rate)"
+	default 44100
+	depends on SYNTH
+	help
+	  Number of samples to generate per second.
+
+config SYNTH_0_FREQ
+	int "Frequency of first channel"
+	default 440
+	depends on SYNTH
+	help
+	  The signal frequency in hertz of the zeroth channel
+
+config SYNTH_0_PHASE
+	int "Phase of first channel in degrees"
+	default 0
+	depends on SYNTH
+	help
+	  The signal phase in degress of the zeroth channel
+
+config SYNTH_1_FREQ
+	int "Frequency of second channel"
+	default 880
+	depends on SYNTH
+	help
+	  The signal frequency in hertz of the first channel
+
+config SYNTH_1_PHASE
+	int "Phase of second channel in degrees"
+	default 45
+	depends on SYNTH
+	help
+	  The signal phase in degrees of the first channel
+
+endif # SYNTH