Add overlay for ads1115 ADCs #1864
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pelwell
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Mar 1, 2017
arch/arm/boot/dts/overlays/README
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| @@ -196,6 +196,28 @@ Params: addr I2C bus address of device. Set based on how the | |||
| http://www.ti.com/lit/ds/symlink/ads1015.pdf | |||
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| Name: ads1115 | |||
| Info: Texas Instruments ADS1115 ADC | |||
| Load: dtoverlay=ads1115,<param>[=<val>] | |||
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The preceding three lines need one extra space each to get the indent right.
arch/arm/boot/dts/overlays/README
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| addr pin is wired. (default=0x48 assumes addr | ||
| is pulled to GND) | ||
| cha_enable Enable virtual channel a. | ||
| cha_mux Set the input mux for virtual channel a. |
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Is this what the overlay calls cha_cfg? They need to match.
arch/arm/boot/dts/overlays/README
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| cha_mux Set the input mux for virtual channel a. | ||
| (default=4 configures this channel for the | ||
| voltage at A0 with respect to GND) | ||
| cha_rate Set the datarate (samples/sec) for this channel. |
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Another mismatch - rate<->datarate.
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kernel: BCM2835-V4L2: Correctly denote key frames in encoded data kernel: bcm2835-gpio-exp: Driver for GPIO expander via mailbox service See: raspberrypi/linux#1852 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: amba_pl011: Round input clock up kernel: clk-bcm2835: Correct the prediv logic firmware: Redo CEC code cleanup 3: Removed CEC topology computation firmware: Redo CEC code cleanup 4: Removed unused functions firmware: Redo CEC code cleanup 5: Removed Rx processing firmware: Redo CEC code cleanup 6: Logging changed to VCOS firmware: Redo CEC code cleanup 7: Removed hdmi_state_machine_clock_changed firmware: Redo CEC code cleanup 8: fixed hdmi state machine clk firmware: Redo CEC code cleanup 10: misc cosmetic changes firmware: Fixup CEC code cleanup 8: fixed hdmi state machine clk firmware: hdmi: Add way of forcing logging for hdmi and cec from boot firmware: Redo CEC code cleanup 11: cec_release_logical_addr firmware: arm_loader: Respect smsc95xx.macaddr parameter See: raspberrypi/linux#1865 firmware: vec: Fix progressive scan composite mode See: #683 firmware: vec: PAL_M mode is 525/60 See: #756 firmware: IL ISP: Support Bayer firmware: IL ISP: Fix error in stride calcs for YUYV formats firmware: video_render: buffer size fixup for ARGB888 firmware: video_render: Support per-pixel alpha on RGBA input See: waveform80/picamera#199
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kernel: BCM2835-V4L2: Correctly denote key frames in encoded data kernel: bcm2835-gpio-exp: Driver for GPIO expander via mailbox service See: raspberrypi/linux#1852 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: amba_pl011: Round input clock up kernel: clk-bcm2835: Correct the prediv logic firmware: Redo CEC code cleanup 3: Removed CEC topology computation firmware: Redo CEC code cleanup 4: Removed unused functions firmware: Redo CEC code cleanup 5: Removed Rx processing firmware: Redo CEC code cleanup 6: Logging changed to VCOS firmware: Redo CEC code cleanup 7: Removed hdmi_state_machine_clock_changed firmware: Redo CEC code cleanup 8: fixed hdmi state machine clk firmware: Redo CEC code cleanup 10: misc cosmetic changes firmware: Fixup CEC code cleanup 8: fixed hdmi state machine clk firmware: hdmi: Add way of forcing logging for hdmi and cec from boot firmware: Redo CEC code cleanup 11: cec_release_logical_addr firmware: arm_loader: Respect smsc95xx.macaddr parameter See: raspberrypi/linux#1865 firmware: vec: Fix progressive scan composite mode See: raspberrypi/firmware#683 firmware: vec: PAL_M mode is 525/60 See: raspberrypi/firmware#756 firmware: IL ISP: Support Bayer firmware: IL ISP: Fix error in stride calcs for YUYV formats firmware: video_render: buffer size fixup for ARGB888 firmware: video_render: Support per-pixel alpha on RGBA input See: waveform80/picamera#199
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kernel: BCM2835-V4L2: Correctly denote key frames in encoded data kernel: bcm2835-gpio-exp: Driver for GPIO expander via mailbox service See: raspberrypi/linux#1852 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: amba_pl011: Round input clock up kernel: clk-bcm2835: Correct the prediv logic firmware: Redo CEC code cleanup 3: Removed CEC topology computation firmware: Redo CEC code cleanup 4: Removed unused functions firmware: Redo CEC code cleanup 5: Removed Rx processing firmware: Redo CEC code cleanup 6: Logging changed to VCOS firmware: Redo CEC code cleanup 7: Removed hdmi_state_machine_clock_changed firmware: Redo CEC code cleanup 8: fixed hdmi state machine clk firmware: Redo CEC code cleanup 10: misc cosmetic changes firmware: Fixup CEC code cleanup 8: fixed hdmi state machine clk firmware: hdmi: Add way of forcing logging for hdmi and cec from boot firmware: Redo CEC code cleanup 11: cec_release_logical_addr firmware: arm_loader: Respect smsc95xx.macaddr parameter See: raspberrypi/linux#1865 firmware: vec: Fix progressive scan composite mode See: #683 firmware: vec: PAL_M mode is 525/60 See: #756 firmware: IL ISP: Support Bayer firmware: IL ISP: Fix error in stride calcs for YUYV formats firmware: video_render: buffer size fixup for ARGB888 firmware: video_render: Support per-pixel alpha on RGBA input See: waveform80/picamera#199
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kernel: BCM2835-V4L2: Correctly denote key frames in encoded data kernel: bcm2835-gpio-exp: Driver for GPIO expander via mailbox service See: raspberrypi/linux#1852 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: amba_pl011: Round input clock up kernel: clk-bcm2835: Correct the prediv logic firmware: Redo CEC code cleanup 3: Removed CEC topology computation firmware: Redo CEC code cleanup 4: Removed unused functions firmware: Redo CEC code cleanup 5: Removed Rx processing firmware: Redo CEC code cleanup 6: Logging changed to VCOS firmware: Redo CEC code cleanup 7: Removed hdmi_state_machine_clock_changed firmware: Redo CEC code cleanup 8: fixed hdmi state machine clk firmware: Redo CEC code cleanup 10: misc cosmetic changes firmware: Fixup CEC code cleanup 8: fixed hdmi state machine clk firmware: hdmi: Add way of forcing logging for hdmi and cec from boot firmware: Redo CEC code cleanup 11: cec_release_logical_addr firmware: arm_loader: Respect smsc95xx.macaddr parameter See: raspberrypi/linux#1865 firmware: vec: Fix progressive scan composite mode See: raspberrypi/firmware#683 firmware: vec: PAL_M mode is 525/60 See: raspberrypi/firmware#756 firmware: IL ISP: Support Bayer firmware: IL ISP: Fix error in stride calcs for YUYV formats firmware: video_render: buffer size fixup for ARGB888 firmware: video_render: Support per-pixel alpha on RGBA input See: waveform80/picamera#199
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kernel: BCM270X_DT: Invert Pi3 power LED to match fw change See: raspberrypi/linux#1879 kernel: Add support for the AudioInjector Octo sound card See: raspberrypi/linux#1884 kernel: Fix gadget mode for bcm2835 See: raspberrypi/linux#1887 kernel: bcm2835-v4l2: Fix buffer overflow problem See: raspberrypi/linux#1890 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: BCM270X_DT: Flip the polarity of the CM3's HDMI HPD See: raspberrypi/linux#1869 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: config: Add CONFIG_CRYPTO_LZ4 See: raspberrypi/linux#1875 kernel: clk-bcm2835: Read max core clock from firmware firmware: GPIO expander: rework so the mailbox service reads raw values firmware: arm_loader: Check GPIO direction for low_voltage See: raspberrypi/linux#1879 firmware: warnings: Fix some mostly spurious warnings firmware: clock: Calculate PLL multipliers with more precision firmware: Set up HDMI VCO same for VEC as for HDMI firmeare: gpu_server: Move detailed logging to LOGGING_VMCS_VERBOSE category
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kernel: BCM270X_DT: Invert Pi3 power LED to match fw change See: raspberrypi/linux#1879 kernel: Add support for the AudioInjector Octo sound card See: raspberrypi/linux#1884 kernel: Fix gadget mode for bcm2835 See: raspberrypi/linux#1887 kernel: bcm2835-v4l2: Fix buffer overflow problem See: raspberrypi/linux#1890 kernel: Add support for Fe-Pi audio sound card See: raspberrypi/linux#1867 kernel: BCM270X_DT: Flip the polarity of the CM3's HDMI HPD See: raspberrypi/linux#1869 kernel: Add overlay for ads1115 ADCs See: raspberrypi/linux#1864 kernel: config: Add CONFIG_CRYPTO_LZ4 See: raspberrypi/linux#1875 kernel: clk-bcm2835: Read max core clock from firmware firmware: GPIO expander: rework so the mailbox service reads raw values firmware: arm_loader: Check GPIO direction for low_voltage See: raspberrypi/linux#1879 firmware: warnings: Fix some mostly spurious warnings firmware: clock: Calculate PLL multipliers with more precision firmware: Set up HDMI VCO same for VEC as for HDMI firmeare: gpu_server: Move detailed logging to LOGGING_VMCS_VERBOSE category
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The ads1015 kernel driver supports ads1015 and ads1115 devices but different data rate tables are used internally based on the device. The data rate tables are used to calculate timeouts.