iMX7D - FTM in Quadrature Decoder mode
I am using iMX7D processor for my application( Using Toradex Aster eval board iMX7D 512MB running Win CE 7.0 OS ). I'm trying to use its Flextimer ( FTM ) module in Quadrature decoder mode. Application being and optical encoder is connected to Phase A and Phase B inputs of FTM1 module and FTM counter should run(increment/decrements) based on these inputs.
I have made all the possible combinations to initialise the FTM registers and run the module but it didn't work for me.
When I was going through the reference manual Document Number: IMX7DRM Rev. 1, 01/2018 , i found that there are mistakes in FTM registers in manual too. that i have understood and corrected somehow.
As FTM module is not working with our driver so I want somebody just go through my FTM register settings and point out where we went wrong.
FTM register settings are shown below:
CCM_CCGR128 0x00003333
CCM_TARGET_ROOT 0x10000000
FTM_SC 0x08 (CLKS = 01)
FTM_CNT 0x05
FTM_MOD 0x0000FFFF
FTM_CNTIN 0x00000000
FTM_MODE 0x05 (WPDIS = 1 FTMEN = 1)
FTM_QDCTRL 0x01 (QUADEN = 1 )
Is there any requirement to enable module clock for FTM (CCM registers) and enabling clock in FTM_SC register specially for Quadrature decoder mode ?
Is there any sequence for FTM registers initialisation ?
From Figure 12-6. FTM block diagram of reference manual, I understand there is no requirement of clock for FTM module in quadrature decoder mode. so I tried disabling the FTM clock also.
When enabled - FTM_CNT start increment even without input FTM_PHA and FTM_PHB pins.
When Disabled - FTM_CNT remains 0 even if I was giving encoder pulses on FTM_PHA and FTM_PHB pins.
Also I would like to know that, Is there any ERRATA in FTM module in iMX7Dual processor ?
Regards
Bipin Kumar
windows-ce pwm imx6 nxp-microcontroller motordriver
edited Nov 20 at 8:12
halfelf
6,46993146
asked Nov 20 at 6:00
BKT
4113
add a comment |
I am using iMX7D processor for my application( Using Toradex Aster eval board iMX7D 512MB running Win CE 7.0 OS ). I'm trying to use its Flextimer ( FTM ) module in Quadrature decoder mode. Application being and optical encoder is connected to Phase A and Phase B inputs of FTM1 module and FTM counter should run(increment/decrements) based on these inputs.
I have made all the possible combinations to initialise the FTM registers and run the module but it didn't work for me.
When I was going through the reference manual Document Number: IMX7DRM Rev. 1, 01/2018 , i found that there are mistakes in FTM registers in manual too. that i have understood and corrected somehow.
As FTM module is not working with our driver so I want somebody just go through my FTM register settings and point out where we went wrong.
FTM register settings are shown below:
CCM_CCGR128 0x00003333
CCM_TARGET_ROOT 0x10000000
FTM_SC 0x08 (CLKS = 01)
FTM_CNT 0x05
FTM_MOD 0x0000FFFF
FTM_CNTIN 0x00000000
FTM_MODE 0x05 (WPDIS = 1 FTMEN = 1)
FTM_QDCTRL 0x01 (QUADEN = 1 )
Is there any requirement to enable module clock for FTM (CCM registers) and enabling clock in FTM_SC register specially for Quadrature decoder mode ?
Is there any sequence for FTM registers initialisation ?
From Figure 12-6. FTM block diagram of reference manual, I understand there is no requirement of clock for FTM module in quadrature decoder mode. so I tried disabling the FTM clock also.
When enabled - FTM_CNT start increment even without input FTM_PHA and FTM_PHB pins.
When Disabled - FTM_CNT remains 0 even if I was giving encoder pulses on FTM_PHA and FTM_PHB pins.
Also I would like to know that, Is there any ERRATA in FTM module in iMX7Dual processor ?
Regards
Bipin Kumar
windows-ce pwm imx6 nxp-microcontroller motordriver
edited Nov 20 at 8:12
halfelf
6,46993146
asked Nov 20 at 6:00
BKT
4113
add a comment |
I am using iMX7D processor for my application( Using Toradex Aster eval board iMX7D 512MB running Win CE 7.0 OS ). I'm trying to use its Flextimer ( FTM ) module in Quadrature decoder mode. Application being and optical encoder is connected to Phase A and Phase B inputs of FTM1 module and FTM counter should run(increment/decrements) based on these inputs.
I have made all the possible combinations to initialise the FTM registers and run the module but it didn't work for me.
When I was going through the reference manual Document Number: IMX7DRM Rev. 1, 01/2018 , i found that there are mistakes in FTM registers in manual too. that i have understood and corrected somehow.
As FTM module is not working with our driver so I want somebody just go through my FTM register settings and point out where we went wrong.
FTM register settings are shown below:
CCM_CCGR128 0x00003333
CCM_TARGET_ROOT 0x10000000
FTM_SC 0x08 (CLKS = 01)
FTM_CNT 0x05
FTM_MOD 0x0000FFFF
FTM_CNTIN 0x00000000
FTM_MODE 0x05 (WPDIS = 1 FTMEN = 1)
FTM_QDCTRL 0x01 (QUADEN = 1 )
Is there any requirement to enable module clock for FTM (CCM registers) and enabling clock in FTM_SC register specially for Quadrature decoder mode ?
Is there any sequence for FTM registers initialisation ?
From Figure 12-6. FTM block diagram of reference manual, I understand there is no requirement of clock for FTM module in quadrature decoder mode. so I tried disabling the FTM clock also.
When enabled - FTM_CNT start increment even without input FTM_PHA and FTM_PHB pins.
When Disabled - FTM_CNT remains 0 even if I was giving encoder pulses on FTM_PHA and FTM_PHB pins.
Also I would like to know that, Is there any ERRATA in FTM module in iMX7Dual processor ?
Regards
Bipin Kumar
windows-ce pwm imx6 nxp-microcontroller motordriver
edited Nov 20 at 8:12
halfelf
6,46993146
asked Nov 20 at 6:00
BKT
4113
I am using iMX7D processor for my application( Using Toradex Aster eval board iMX7D 512MB running Win CE 7.0 OS ). I'm trying to use its Flextimer ( FTM ) module in Quadrature decoder mode. Application being and optical encoder is connected to Phase A and Phase B inputs of FTM1 module and FTM counter should run(increment/decrements) based on these inputs.
I have made all the possible combinations to initialise the FTM registers and run the module but it didn't work for me.
When I was going through the reference manual Document Number: IMX7DRM Rev. 1, 01/2018 , i found that there are mistakes in FTM registers in manual too. that i have understood and corrected somehow.
As FTM module is not working with our driver so I want somebody just go through my FTM register settings and point out where we went wrong.
FTM register settings are shown below:
CCM_CCGR128 0x00003333
CCM_TARGET_ROOT 0x10000000
FTM_SC 0x08 (CLKS = 01)
FTM_CNT 0x05
FTM_MOD 0x0000FFFF
FTM_CNTIN 0x00000000
FTM_MODE 0x05 (WPDIS = 1 FTMEN = 1)
FTM_QDCTRL 0x01 (QUADEN = 1 )
Is there any requirement to enable module clock for FTM (CCM registers) and enabling clock in FTM_SC register specially for Quadrature decoder mode ?
Is there any sequence for FTM registers initialisation ?
From Figure 12-6. FTM block diagram of reference manual, I understand there is no requirement of clock for FTM module in quadrature decoder mode. so I tried disabling the FTM clock also.
When enabled - FTM_CNT start increment even without input FTM_PHA and FTM_PHB pins.
When Disabled - FTM_CNT remains 0 even if I was giving encoder pulses on FTM_PHA and FTM_PHB pins.
Also I would like to know that, Is there any ERRATA in FTM module in iMX7Dual processor ?
Regards
Bipin Kumar
windows-ce pwm imx6 nxp-microcontroller motordriver
windows-ce pwm imx6 nxp-microcontroller motordriver
edited Nov 20 at 8:12
halfelf
6,46993146
asked Nov 20 at 6:00
BKT
4113
edited Nov 20 at 8:12
halfelf
6,46993146
asked Nov 20 at 6:00
BKT
4113
edited Nov 20 at 8:12
halfelf
6,46993146
edited Nov 20 at 8:12
halfelf
6,46993146
edited Nov 20 at 8:12
halfelf
6,46993146
6,46993146
asked Nov 20 at 6:00
BKT
4113
asked Nov 20 at 6:00
BKT
4113
asked Nov 20 at 6:00
BKT
4113
4113
add a comment |
add a comment |
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