diff for duplicates of <4D887D1E.90503@cam.ac.uk> diff --git a/a/1.txt b/N1/1.txt index 1ec33c7..f0833df 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -4,10 +4,9 @@ On 03/22/11 08:16, Hennerich, Michael wrote: >> >>> -----Original Message----- >>> From: Jonathan Cameron [mailto:jic23@cam.ac.uk] ->>> Sent: 2011=E5=B9=B43=E6=9C=8822=E6=97=A5 1:40 +>>> Sent: 2011年3月22日 1:40 >>> To: Cai, Cliff ->>> Cc: linux-iio@vger.kernel.org; linux-kernel@vger.kernel.org; Driver= -s; +>>> Cc: linux-iio@vger.kernel.org; linux-kernel@vger.kernel.org; Drivers; >>> device-drivers-devel@blackfin.uclinux.org; Cliff Cai >>> Subject: Re: [PATCH RESEND v2]IIO driver for Analog Devices Digital >>> Output Gyroscope ADXRS450 @@ -22,51 +21,40 @@ s; >>> Hi Cliff, >>> >>> As you are proposing a couple of new interfaces we need to have ->>> documentation for them. They are quad and dynamic_null_correction. = -We ->>> need to first establish whether they are of general utility and hen= -ce ->>> should be in the main abi doc. The quadrature one isn't something I= -'ve +>>> documentation for them. They are quad and dynamic_null_correction. We +>>> need to first establish whether they are of general utility and hence +>>> should be in the main abi doc. The quadrature one isn't something I've >>> seen before. Is it common in gyros? >> >> I'm not sure about this. >> Michael,do you have any ideas? ->=20 +> > The ADXRS450 is a quite new part and features a new sensor design - > So I don't think the quadrature error is to date very common. > It might become in future... ->=20 +> > From the datasheet: ->=20 +> > "The quad sensor design rejects linear and angular > acceleration, including external g-forces and vibration. This is > achieved by mechanically coupling the four sensing structures > such that external g-forces appear as common-mode signals -> that can be removed by the fully differential architecture implemente= -d in the ADXRS450." ->=20 -> "The quad memory registers contain a value corresponding to the amoun= -t of +> that can be removed by the fully differential architecture implemented in the ADXRS450." +> +> "The quad memory registers contain a value corresponding to the amount of > quadrature error present in the device at a given time. -> Quadrature can be likened to a measurement of the error of the motion= - of the +> Quadrature can be likened to a measurement of the error of the motion of the > resonator structure, and can be caused by stresses and aging effects. -> The quadrature data is filtered to 80 Hz and can be read frequently t= -o +> The quadrature data is filtered to 80 Hz and can be read frequently to > detect sudden shifts in the level of quadrature. > The data is presented as a 16-bit, twos complement number." ->=20 -Cool. So what is a good general name for this? I guess from this descr= -iption -if it were in a multi axis device you would have this measure for each = -axis? +> +Cool. So what is a good general name for this? I guess from this description +if it were in a multi axis device you would have this measure for each axis? So perhaps gyro_z_quadrature_correction_raw? This thing also looks -rather similar to a dynamically changing calibbias. Perhaps we need ano= -ther -term for a general dynamic linear (I think this is linear) correction i= -nside +rather similar to a dynamically changing calibbias. Perhaps we need another +term for a general dynamic linear (I think this is linear) correction inside a device? Perhaps go with a gyro specific term for now and wait to see if we get @@ -75,13 +63,11 @@ many more parts with this feature... >>> Dynamic null correction looks like it should be gyro_z_calibbias to >>> me but I could be wrong. The doc says " >>> The user can make small adjustments to the rateout of the device by ->>> asserting these bits. This 10-bit register allows the user to adjus= -t ->>> the static rateout of the device by up to =C2=B16.4=C2=B0/sec. +>>> asserting these bits. This 10-bit register allows the user to adjust +>>> the static rateout of the device by up to ±6.4°/sec. >>> " >>> ->>> which makes me think it is an internally applied offset on the outp= -ut +>>> which makes me think it is an internally applied offset on the output >>> signal and hence calibbias in our abi. >> >> Thanks @@ -89,13 +75,11 @@ ut >>> Other than that, various minor nitpicks inline. >>> >>> Jonathan ->=20 +> > Greetings, > Michael ->=20 +> > -- > Analog Devices GmbH Wilhelm-Wagenfeld-Str. 6 80807 Muenchen -> Sitz der Gesellschaft: Muenchen; Registergericht: Muenchen HRB 40368;= - Geschaeftsfuehrer:Dr.Carsten Suckrow, Thomas Wessel, William A. Martin= -, Margaret Seif ->=20 +> Sitz der Gesellschaft: Muenchen; Registergericht: Muenchen HRB 40368; Geschaeftsfuehrer:Dr.Carsten Suckrow, Thomas Wessel, William A. Martin, Margaret Seif +> diff --git a/a/content_digest b/N1/content_digest index b67c0b3..517fbd8 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -22,10 +22,9 @@ ">>\n" ">>> -----Original Message-----\n" ">>> From: Jonathan Cameron [mailto:jic23@cam.ac.uk]\n" - ">>> Sent: 2011=E5=B9=B43=E6=9C=8822=E6=97=A5 1:40\n" + ">>> Sent: 2011\345\271\2643\346\234\21022\346\227\245 1:40\n" ">>> To: Cai, Cliff\n" - ">>> Cc: linux-iio@vger.kernel.org; linux-kernel@vger.kernel.org; Driver=\n" - "s;\n" + ">>> Cc: linux-iio@vger.kernel.org; linux-kernel@vger.kernel.org; Drivers;\n" ">>> device-drivers-devel@blackfin.uclinux.org; Cliff Cai\n" ">>> Subject: Re: [PATCH RESEND v2]IIO driver for Analog Devices Digital\n" ">>> Output Gyroscope ADXRS450\n" @@ -40,51 +39,40 @@ ">>> Hi Cliff,\n" ">>>\n" ">>> As you are proposing a couple of new interfaces we need to have\n" - ">>> documentation for them. They are quad and dynamic_null_correction. =\n" - "We\n" - ">>> need to first establish whether they are of general utility and hen=\n" - "ce\n" - ">>> should be in the main abi doc. The quadrature one isn't something I=\n" - "'ve\n" + ">>> documentation for them. They are quad and dynamic_null_correction. We\n" + ">>> need to first establish whether they are of general utility and hence\n" + ">>> should be in the main abi doc. The quadrature one isn't something I've\n" ">>> seen before. Is it common in gyros?\n" ">>\n" ">> I'm not sure about this.\n" ">> Michael,do you have any ideas?\n" - ">=20\n" + "> \n" "> The ADXRS450 is a quite new part and features a new sensor design -\n" "> So I don't think the quadrature error is to date very common.\n" "> It might become in future...\n" - ">=20\n" + "> \n" "> From the datasheet:\n" - ">=20\n" + "> \n" "> \"The quad sensor design rejects linear and angular\n" "> acceleration, including external g-forces and vibration. This is\n" "> achieved by mechanically coupling the four sensing structures\n" "> such that external g-forces appear as common-mode signals\n" - "> that can be removed by the fully differential architecture implemente=\n" - "d in the ADXRS450.\"\n" - ">=20\n" - "> \"The quad memory registers contain a value corresponding to the amoun=\n" - "t of\n" + "> that can be removed by the fully differential architecture implemented in the ADXRS450.\"\n" + "> \n" + "> \"The quad memory registers contain a value corresponding to the amount of\n" "> quadrature error present in the device at a given time.\n" - "> Quadrature can be likened to a measurement of the error of the motion=\n" - " of the\n" + "> Quadrature can be likened to a measurement of the error of the motion of the\n" "> resonator structure, and can be caused by stresses and aging effects.\n" - "> The quadrature data is filtered to 80 Hz and can be read frequently t=\n" - "o\n" + "> The quadrature data is filtered to 80 Hz and can be read frequently to\n" "> detect sudden shifts in the level of quadrature.\n" "> The data is presented as a 16-bit, twos complement number.\"\n" - ">=20\n" - "Cool. So what is a good general name for this? I guess from this descr=\n" - "iption\n" - "if it were in a multi axis device you would have this measure for each =\n" - "axis?\n" + "> \n" + "Cool. So what is a good general name for this? I guess from this description\n" + "if it were in a multi axis device you would have this measure for each axis?\n" "\n" "So perhaps gyro_z_quadrature_correction_raw? This thing also looks\n" - "rather similar to a dynamically changing calibbias. Perhaps we need ano=\n" - "ther\n" - "term for a general dynamic linear (I think this is linear) correction i=\n" - "nside\n" + "rather similar to a dynamically changing calibbias. Perhaps we need another\n" + "term for a general dynamic linear (I think this is linear) correction inside\n" "a device?\n" "\n" "Perhaps go with a gyro specific term for now and wait to see if we get\n" @@ -93,13 +81,11 @@ ">>> Dynamic null correction looks like it should be gyro_z_calibbias to\n" ">>> me but I could be wrong. The doc says \"\n" ">>> The user can make small adjustments to the rateout of the device by\n" - ">>> asserting these bits. This 10-bit register allows the user to adjus=\n" - "t\n" - ">>> the static rateout of the device by up to =C2=B16.4=C2=B0/sec.\n" + ">>> asserting these bits. This 10-bit register allows the user to adjust\n" + ">>> the static rateout of the device by up to \302\2616.4\302\260/sec.\n" ">>> \"\n" ">>>\n" - ">>> which makes me think it is an internally applied offset on the outp=\n" - "ut\n" + ">>> which makes me think it is an internally applied offset on the output\n" ">>> signal and hence calibbias in our abi.\n" ">>\n" ">> Thanks\n" @@ -107,15 +93,13 @@ ">>> Other than that, various minor nitpicks inline.\n" ">>>\n" ">>> Jonathan\n" - ">=20\n" + "> \n" "> Greetings,\n" "> Michael\n" - ">=20\n" + "> \n" "> --\n" "> Analog Devices GmbH Wilhelm-Wagenfeld-Str. 6 80807 Muenchen\n" - "> Sitz der Gesellschaft: Muenchen; Registergericht: Muenchen HRB 40368;=\n" - " Geschaeftsfuehrer:Dr.Carsten Suckrow, Thomas Wessel, William A. Martin=\n" - ", Margaret Seif\n" - >=20 + "> Sitz der Gesellschaft: Muenchen; Registergericht: Muenchen HRB 40368; Geschaeftsfuehrer:Dr.Carsten Suckrow, Thomas Wessel, William A. Martin, Margaret Seif\n" + > -4c89fbd9cdc5b3ab69685a01f1405b8d7748823f06c1d08e528f6b013677915d +c3912f8992f245bb4b09e935e11bd242e6f023b7b0d9421d1c18c24ad4bdc96d
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.