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LM27761: About negative voltage conversion

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Part Number:LM27761

Hi,

Could you tell me about negative output circuit?
Please confirm the attached file.

(Please visit the site to view this file)

Is this configuration feasible?
if you have any concerns, please let me know.

Best Regards,
Yusuke/Japan Disty


LM5002: LM5002 Ripple issue

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Part Number:LM5002

I use LM5002 to convert 12V to 48V, While the ripple of the waveform is too high(about 10V). The load is a mic, and the current is about 10mA.

What is the possible reason?(Below is the schematic and the waveform)

Linux: Can monitor firmware run at DDR?

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Tool/software: Linux

 Hollow FAQ:

I am using tci6638K2K. When Linux is starting, the monitor firmware have to loaded to 0xc5f0000(MSM address). But the MSM is use for DSP. So I want know:can monitor runing at DDR?

Thank you very much!

[J6] can't boot when MCASP interface is not connected device.

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Hi,

I'm trying to port MCASP driver on our test board (This MCASP interface is not
connected to any device or decoder). but now it can not boot anymore, the log as
follows,

Starting kernel ...

Booting Linux on physical CPU 0x0
Linux version 3.14.63 (sean_fang@tpedmcbm03) (gcc version 4.7.3 20130226 (prerelease)
(crosstool-NG linaro-1.13.1-4.7-2013.03-20130313 - Linaro GCC 2013.03) ) #6 SMP
PREEMPT Fri Feb 3 16:26:57 CST 2017
CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=10c5387d
CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
Ignoring memory below PHYS_OFFSET: 0x00000000-0x00000001
Machine model: TI DRA742
Reserved memory: created CMA memory pool at 0x95800000, size 56 MiB
Reserved memory: initialized node ipu2_cma@95800000, compatible id shared-dma-pool
Reserved memory: created CMA memory pool at 0x99000000, size 64 MiB
Reserved memory: initialized node dsp1_cma@99000000, compatible id shared-dma-pool
Reserved memory: created CMA memory pool at 0x9d000000, size 32 MiB
Reserved memory: initialized node ipu1_cma@9d000000, compatible id shared-dma-pool
Reserved memory: created CMA memory pool at 0x9f000000, size 8 MiB
Reserved memory: initialized node dsp2_cma@9f000000, compatible id shared-dma-pool
cma: CMA: reserved 64 MiB at ab800000
Memory policy: Data cache writealloc
DRA752 ES1.1
PERCPU: Embedded 8 pages/cpu @ea760000 s8384 r8192 d16192 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 517136
Kernel command line: console=ttyO0,115200n8 elevator=noop root=PARTUUID=fdacd6b3-02 rw
rootwait earlyprintk fixrtc omapdrm.num_crtc=2 consoleblank=0 cma=64M rootfstype=ext4
snd.slots_reserved=1,1
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 1818584K/2074624K available (5635K kernel code, 372K rwdata, 2200K rodata,
280K init, 249K bss, 256040K reserved, 1300480K highmem)
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xf0000000 - 0xff000000 ( 240 MB)
lowmem : 0xc0000000 - 0xef800000 ( 760 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc07aefb4 (7836 kB)
.init : 0xc07af000 - 0xc07f50c0 ( 281 kB)
.data : 0xc07f6000 - 0xc08530d0 ( 373 kB)
.bss : 0xc08530dc - 0xc08916d4 ( 250 kB)
Preemptible hierarchical RCU implementation.
NR_IRQS:16 nr_irqs:16 16
clock: dpll_abe_ck failed transition to 'locked'
omap_hwmod: mpu: enabling
omap_hwmod: timer1: enabling
omap_hwmod: timer1: enabling
OMAP clockevent source: timer1 at 31475 Hz
omap_hwmod: counter_32k: enabling
omap_hwmod: counter_32k: enabling
sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 65536000000000ns
OMAP clocksource: 32k_counter at 32768 Hz
Architected cp15 timer(s) running at 5.90MHz (virt).
sched_clock: 56 bits at 5MHz, resolution 169ns, wraps every 2911033065472ns
Switching to timer-based delay loop
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 11.80
BogoMIPS (lpj=59016)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
CPU: Testing write buffer coherency: ok
/cpus/cpu@0 missing clock-frequency property
/cpus/cpu@1 missing clock-frequency property
CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
Setting up static identity map for 0x805864a8 - 0x80586500
CPU1: Booted secondary processor
CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
Brought up 2 CPUs
SMP: Total of 2 processors activated (23.60 BogoMIPS).
CPU: All CPU(s) started in SVC mode.
devtmpfs: initialized
VFP support v0.3: implementor 41 architecture 4 part 30 variant f rev 0
omap_hwmod: l3_main_2 using broken dt data from ocp
omap_hwmod: tptc0 using broken dt data from edma-controller
omap_hwmod: tptc1 using broken dt data from edma-controller
omap_hwmod: l3_main_1: enabling
omap_hwmod: dmm: enabling
omap_hwmod: emif_ocp_fw: enabling
omap_hwmod: l3_main_2: enabling
omap_hwmod: l3_instr: enabling
omap_hwmod: l4_cfg: enabling
omap_hwmod: l4_per1: enabling
omap_hwmod: l4_per2: enabling
omap_hwmod: l4_per3: enabling
omap_hwmod: l4_wkup: enabling
omap_hwmod: bb2d: enabling
omap_hwmod: ctrl_module_wkup: enabling
omap_hwmod: gmac: enabling
omap_hwmod: davinci_mdio: enabling
omap_hwmod: dma_system: enabling
omap_hwmod: tpcc: enabling
omap_hwmod: tptc0: enabling
omap_hwmod: tptc1: enabling
omap_hwmod: dss_core: enabling
omap_hwmod: dss_core: enabling
omap_hwmod: dss_dispc: enabling
omap_hwmod: dss_core: enabling
omap_hwmod: dss_hdmi: enabling
omap_hwmod: aes1: enabling
omap_hwmod: aes2: enabling
omap_hwmod: sham: enabling
omap_hwmod: mcasp2: enabling
clock: dpll_abe_ck failed transition to 'locked'
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:885 __clk_disable+0x34/0x80()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c076723d r5:20000093 r4:00000000 r3:00200040
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:00000000
[<c0035298>] (warn_slowpath_common) from [<c003534c>] (warn_slowpath_null+0x24/0x2c)
r8:c07baca4 r7:c085396c r6:00000000 r5:ea021a00 r4:ea021a00
[<c0035328>] (warn_slowpath_null) from [<c04827e4>] (__clk_disable+0x34/0x80)
[<c04827b0>] (__clk_disable) from [<c048292c>] (clk_disable+0x20/0x2c)
r4:a0000013 r3:00000160
[<c048290c>] (clk_disable) from [<c0022eb0>] (_disable_clocks+0x20/0x64)
r5:c080ad9c r4:c080ad9c
[<c0022e90>] (_disable_clocks) from [<c00236b4>] (_enable+0x258/0x2a0)
r6:00000000 r5:fffffff0 r4:c080ad9c r3:00000160
[<c002345c>] (_enable) from [<c07ba820>] (_setup+0xd4/0x214)
r7:00000000 r6:c080ade8 r5:00000001 r4:c080ad9c
[<c07ba74c>] (_setup) from [<c0023de8>] (omap_hwmod_for_each+0x38/0x68)
r6:c07ba74c r5:c0803f18 r4:c080ad9c
[<c0023db0>] (omap_hwmod_for_each) from [<c07bacdc>] (__omap_hwmod_setup_all
+0x38/0x48)
r7:c0853100 r6:c07f2448 r5:c07e6634 r4:00000001
[<c07baca4>] (__omap_hwmod_setup_all) from [<c00087ec>] (do_one_initcall+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2448 r5:c07e6634
r4:00000001
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebf4 ]---
omap_hwmod: mcasp2: _wait_target_ready: -16
omap_hwmod: mcasp2: cannot be enabled for reset (3)
omap_hwmod: mcasp3: enabling
clock: dpll_abe_ck failed transition to 'locked'
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:885 __clk_disable+0x34/0x80()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c076723d r5:20000093 r4:00000000 r3:00200040
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:00000000
[<c0035298>] (warn_slowpath_common) from [<c003534c>] (warn_slowpath_null+0x24/0x2c)
r8:c07baca4 r7:c085396c r6:00000000 r5:ea021b00 r4:ea021b00
[<c0035328>] (warn_slowpath_null) from [<c04827e4>] (__clk_disable+0x34/0x80)
[<c04827b0>] (__clk_disable) from [<c048292c>] (clk_disable+0x20/0x2c)
r4:a0000013 r3:00000168
[<c048290c>] (clk_disable) from [<c0022eb0>] (_disable_clocks+0x20/0x64)
r5:c080ae20 r4:c080ae20
[<c0022e90>] (_disable_clocks) from [<c00236b4>] (_enable+0x258/0x2a0)
r6:00000000 r5:fffffff0 r4:c080ae20 r3:00000168
[<c002345c>] (_enable) from [<c07ba820>] (_setup+0xd4/0x214)
r7:00000000 r6:c080ae6c r5:00000001 r4:c080ae20
[<c07ba74c>] (_setup) from [<c0023de8>] (omap_hwmod_for_each+0x38/0x68)
r6:c07ba74c r5:c0803f18 r4:c080ae20
[<c0023db0>] (omap_hwmod_for_each) from [<c07bacdc>] (__omap_hwmod_setup_all
+0x38/0x48)
r7:c0853100 r6:c07f2448 r5:c07e6634 r4:00000001
[<c07baca4>] (__omap_hwmod_setup_all) from [<c00087ec>] (do_one_initcall+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2448 r5:c07e6634
r4:00000001
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebf5 ]---
omap_hwmod: mcasp3: _wait_target_ready: -16
omap_hwmod: mcasp3: cannot be enabled for reset (3)
.
.
.
(The contents of log are omitted)
.
.
.
clock: dpll_abe_ck failed transition to 'locked'
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:885 __clk_disable+0x34/0x80()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c076723d r5:20000093 r4:00000000 r3:00200140
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:00000000
[<c0035298>] (warn_slowpath_common) from [<c003534c>] (warn_slowpath_null+0x24/0x2c)
r8:00000004 r7:ea006280 r6:ea00a980 r5:ea021b00 r4:ea021b00
[<c0035328>] (warn_slowpath_null) from [<c04827e4>] (__clk_disable+0x34/0x80)
[<c04827b0>] (__clk_disable) from [<c048292c>] (clk_disable+0x20/0x2c)
r4:20000013 r3:00000001
[<c048290c>] (clk_disable) from [<c048381c>] (__clk_set_parent_after+0x28/0x5c)
r5:ea021b00 r4:ea006280
[<c04837f4>] (__clk_set_parent_after) from [<c0483a8c>] (clk_set_parent+0x13c/0x190)
r6:00000000 r5:ea00a980 r4:ea021b00 r3:c04865d0
[<c0483950>] (clk_set_parent) from [<c04b8990>] (davinci_mcasp_probe+0x7bc/0xa8c)
r8:ea00a980 r7:ea021b00 r6:c084bee4 r5:ea2c7e10 r4:e99e8e10 r3:0000000e
[<c04b81d4>] (davinci_mcasp_probe) from [<c0348150>] (platform_drv_probe+0x20/0x50)
r10:c07e6654 r9:00000000 r8:c07d955c r7:00000000 r6:c084bcc4 r5:c084bcc4
r4:ea2c7e10
[<c0348130>] (platform_drv_probe) from [<c0346c58>] (driver_probe_device+0xbc/0x210)
r5:00000000 r4:ea2c7e10
[<c0346b9c>] (driver_probe_device) from [<c0346e1c>] (__driver_attach+0x70/0x94)
r7:c0346dac r6:c084bcc4 r5:ea2c7e44 r4:ea2c7e10
[<c0346dac>] (__driver_attach) from [<c0345320>] (bus_for_each_dev+0x5c/0x98)
r6:c084bcc4 r5:ea123e48 r4:00000000 r3:00000000
[<c03452c4>] (bus_for_each_dev) from [<c034679c>] (driver_attach+0x20/0x28)
r7:c0831440 r6:00000000 r5:e9a7da80 r4:c084bcc4
[<c034677c>] (driver_attach) from [<c03463c0>] (bus_add_driver+0xd4/0x1d4)
[<c03462ec>] (bus_add_driver) from [<c03474f0>] (driver_register+0xa4/0xe8)
r7:c0853100 r6:c07f2a98 r5:c07e6648 r4:c084bcc4
[<c034744c>] (driver_register) from [<c034807c>] (__platform_driver_register
+0x50/0x64)
r5:c07e6648 r4:00000006
[<c034802c>] (__platform_driver_register) from [<c07d9574>]
(davinci_mcasp_driver_init+0x18/0x20)
[<c07d955c>] (davinci_mcasp_driver_init) from [<c00087ec>] (do_one_initcall
+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2a98 r5:c07e6648
r4:00000006
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebf9 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:885 __clk_disable+0x34/0x80()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c076723d r5:20000093 r4:00000000 r3:00200140
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:00000000
[<c0035298>] (warn_slowpath_common) from [<c003534c>] (warn_slowpath_null+0x24/0x2c)
r8:00000004 r7:ea006280 r6:ea00a980 r5:ea006280 r4:ea006280
[<c0035328>] (warn_slowpath_null) from [<c04827e4>] (__clk_disable+0x34/0x80)
[<c04827b0>] (__clk_disable) from [<c048292c>] (clk_disable+0x20/0x2c)
r4:40000013 r3:00000001
[<c048290c>] (clk_disable) from [<c0483824>] (__clk_set_parent_after+0x30/0x5c)
r5:ea021b00 r4:ea006280
[<c04837f4>] (__clk_set_parent_after) from [<c0483a8c>] (clk_set_parent+0x13c/0x190)
r6:00000000 r5:ea00a980 r4:ea021b00 r3:c04865d0
[<c0483950>] (clk_set_parent) from [<c04b8990>] (davinci_mcasp_probe+0x7bc/0xa8c)
r8:ea00a980 r7:ea021b00 r6:c084bee4 r5:ea2c7e10 r4:e99e8e10 r3:0000000e
[<c04b81d4>] (davinci_mcasp_probe) from [<c0348150>] (platform_drv_probe+0x20/0x50)
r10:c07e6654 r9:00000000 r8:c07d955c r7:00000000 r6:c084bcc4 r5:c084bcc4
r4:ea2c7e10
[<c0348130>] (platform_drv_probe) from [<c0346c58>] (driver_probe_device+0xbc/0x210)
r5:00000000 r4:ea2c7e10
[<c0346b9c>] (driver_probe_device) from [<c0346e1c>] (__driver_attach+0x70/0x94)
r7:c0346dac r6:c084bcc4 r5:ea2c7e44 r4:ea2c7e10
[<c0346dac>] (__driver_attach) from [<c0345320>] (bus_for_each_dev+0x5c/0x98)
r6:c084bcc4 r5:ea123e48 r4:00000000 r3:00000000
[<c03452c4>] (bus_for_each_dev) from [<c034679c>] (driver_attach+0x20/0x28)
r7:c0831440 r6:00000000 r5:e9a7da80 r4:c084bcc4
[<c034677c>] (driver_attach) from [<c03463c0>] (bus_add_driver+0xd4/0x1d4)
[<c03462ec>] (bus_add_driver) from [<c03474f0>] (driver_register+0xa4/0xe8)
r7:c0853100 r6:c07f2a98 r5:c07e6648 r4:c084bcc4
[<c034744c>] (driver_register) from [<c034807c>] (__platform_driver_register
+0x50/0x64)
r5:c07e6648 r4:00000006
[<c034802c>] (__platform_driver_register) from [<c07d9574>]
(davinci_mcasp_driver_init+0x18/0x20)
[<c07d955c>] (davinci_mcasp_driver_init) from [<c00087ec>] (do_one_initcall
+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2a98 r5:c07e6648
r4:00000006
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebfa ]---
omap_hwmod: mcasp3: enabling
clock: dpll_abe_ck failed transition to 'locked'
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:885 __clk_disable+0x34/0x80()
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c076723d r5:20000093 r4:00000000 r3:00200140
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:00000000
[<c0035298>] (warn_slowpath_common) from [<c003534c>] (warn_slowpath_null+0x24/0x2c)
r8:ea123d08 r7:c085396c r6:00000000 r5:ea021b00 r4:ea021b00
[<c0035328>] (warn_slowpath_null) from [<c04827e4>] (__clk_disable+0x34/0x80)
[<c04827b0>] (__clk_disable) from [<c048292c>] (clk_disable+0x20/0x2c)
r4:a0000093 r3:00000168
[<c048290c>] (clk_disable) from [<c0022eb0>] (_disable_clocks+0x20/0x64)
r5:c080ae20 r4:c080ae20
[<c0022e90>] (_disable_clocks) from [<c00236b4>] (_enable+0x258/0x2a0)
r6:00000000 r5:fffffff0 r4:c080ae20 r3:00000168
[<c002345c>] (_enable) from [<c0023f4c>] (omap_hwmod_enable+0x2c/0x4c)
r7:00000004 r6:a0000013 r5:c080ae80 r4:c080ae20
[<c0023f20>] (omap_hwmod_enable) from [<c002514c>] (omap_device_enable+0x50/0x78)
r6:00000002 r5:00000001 r4:ea2c5780 r3:ea2c5740
[<c00250fc>] (omap_device_enable) from [<c002518c>] (_od_runtime_resume+0x18/0x24)
r5:c0025174 r4:ea2c7e10
[<c0025174>] (_od_runtime_resume) from [<c03503b0>] (__rpm_callback+0x38/0x60)
r4:ea2c7e10 r3:00000000
[<c0350378>] (__rpm_callback) from [<c035043c>] (rpm_callback+0x64/0x7c)
r5:ea2c7e10 r4:ea2c7e10
[<c03503d8>] (rpm_callback) from [<c0351200>] (rpm_resume+0x378/0x48c)
r6:00000002 r5:ea185c10 r4:ea2c7e10 r3:c0803f40
[<c0350e88>] (rpm_resume) from [<c0351584>] (__pm_runtime_resume+0x54/0x6c)
r10:ea2b5380 r9:00000001 r8:ea00a980 r7:60000013 r6:00000004 r5:ea2c7e70
r4:ea2c7e10
[<c0351530>] (__pm_runtime_resume) from [<c04b89cc>] (davinci_mcasp_probe+0x7f8/0xa8c)
r7:ea021b00 r6:c084bee4 r5:ea2c7e10 r4:e99e8e10
[<c04b81d4>] (davinci_mcasp_probe) from [<c0348150>] (platform_drv_probe+0x20/0x50)
r10:c07e6654 r9:00000000 r8:c07d955c r7:00000000 r6:c084bcc4 r5:c084bcc4
r4:ea2c7e10
[<c0348130>] (platform_drv_probe) from [<c0346c58>] (driver_probe_device+0xbc/0x210)
r5:00000000 r4:ea2c7e10
[<c0346b9c>] (driver_probe_device) from [<c0346e1c>] (__driver_attach+0x70/0x94)
r7:c0346dac r6:c084bcc4 r5:ea2c7e44 r4:ea2c7e10
[<c0346dac>] (__driver_attach) from [<c0345320>] (bus_for_each_dev+0x5c/0x98)
r6:c084bcc4 r5:ea123e48 r4:00000000 r3:00000000
[<c03452c4>] (bus_for_each_dev) from [<c034679c>] (driver_attach+0x20/0x28)
r7:c0831440 r6:00000000 r5:e9a7da80 r4:c084bcc4
[<c034677c>] (driver_attach) from [<c03463c0>] (bus_add_driver+0xd4/0x1d4)
[<c03462ec>] (bus_add_driver) from [<c03474f0>] (driver_register+0xa4/0xe8)
r7:c0853100 r6:c07f2a98 r5:c07e6648 r4:c084bcc4
[<c034744c>] (driver_register) from [<c034807c>] (__platform_driver_register
+0x50/0x64)
r5:c07e6648 r4:00000006
[<c034802c>] (__platform_driver_register) from [<c07d9574>]
(davinci_mcasp_driver_init+0x18/0x20)
[<c07d955c>] (davinci_mcasp_driver_init) from [<c00087ec>] (do_one_initcall
+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2a98 r5:c07e6648
r4:00000006
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebfb ]---
omap_hwmod: mcasp3: _wait_target_ready: -16
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler
+0x21c/0x320()
44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER2_P3 (Read): Data Access in User
mode during Functional access
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:c072c2d5 r5:20000193 r4:00000000 r3:00200140
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0035304>] (warn_slowpath_common+0x6c/0x90)
r5:00000009 r4:ea123b68
[<c0035298>] (warn_slowpath_common) from [<c00353cc>] (warn_slowpath_fmt+0x38/0x40)
r8:c072c1e7 r7:c072c248 r6:80080003 r5:ea184b90 r4:f1002500
[<c0035398>] (warn_slowpath_fmt) from [<c028eae0>] (l3_interrupt_handler+0x21c/0x320)
r3:ea184e80 r2:c072c2ef
[<c028e8c4>] (l3_interrupt_handler) from [<c006eaf8>] (handle_irq_event_percpu
+0x38/0x184)
r10:ea2b5380 r9:c0852cbb r8:00000000 r7:00000000 r6:00000017 r5:ea177680
r4:ea184800
[<c006eac0>] (handle_irq_event_percpu) from [<c006ec88>] (handle_irq_event+0x44/0x64)
r10:ea2b5380 r9:00000001 r8:ea00a980 r7:ea123d2c r6:ea184800 r5:ea1776dc
r4:ea177680
[<c006ec44>] (handle_irq_event) from [<c0071c38>] (handle_fasteoi_irq+0xc0/0x108)
r6:c07fe978 r5:ea1776dc r4:ea177680 r3:00000000
[<c0071b78>] (handle_fasteoi_irq) from [<c006e480>] (generic_handle_irq+0x28/0x38)
r5:00000000 r4:00000017
[<c006e458>] (generic_handle_irq) from [<c000ec08>] (handle_IRQ+0x6c/0x94)
r4:00000017 r3:00000193
[<c000eb9c>] (handle_IRQ) from [<c0008504>] (gic_handle_irq+0x44/0x68)
r5:ea123cf8 r4:fa212000
[<c00084c0>] (gic_handle_irq) from [<c0582740>] (__irq_svc+0x40/0x70)
Exception stack(0xea123cf8 to 0xea123d40)
3ce0: ea2c7e10 00000005
3d00: 00000000 ea2c7ed0 ea2c7e10 ea2c7e10 00000005 ea021b00 ea00a980 00000001
3d20: ea2b5380 ea123d5c ea123d60 ea123d40 c04b89ec c0350e5c 20000013 ffffffff
r6:ffffffff r5:20000013 r4:c0350e5c r3:c04b89ec
[<c0350e08>] (__pm_runtime_idle) from [<c04b89ec>] (davinci_mcasp_probe+0x818/0xa8c)
r7:ea021b00 r6:c084bee4 r5:ea2c7e10 r4:e99e8e10
[<c04b81d4>] (davinci_mcasp_probe) from [<c0348150>] (platform_drv_probe+0x20/0x50)
r10:c07e6654 r9:00000000 r8:c07d955c r7:00000000 r6:c084bcc4 r5:c084bcc4
r4:ea2c7e10
[<c0348130>] (platform_drv_probe) from [<c0346c58>] (driver_probe_device+0xbc/0x210)
r5:00000000 r4:ea2c7e10
[<c0346b9c>] (driver_probe_device) from [<c0346e1c>] (__driver_attach+0x70/0x94)
r7:c0346dac r6:c084bcc4 r5:ea2c7e44 r4:ea2c7e10
[<c0346dac>] (__driver_attach) from [<c0345320>] (bus_for_each_dev+0x5c/0x98)
r6:c084bcc4 r5:ea123e48 r4:00000000 r3:00000000
[<c03452c4>] (bus_for_each_dev) from [<c034679c>] (driver_attach+0x20/0x28)
r7:c0831440 r6:00000000 r5:e9a7da80 r4:c084bcc4
[<c034677c>] (driver_attach) from [<c03463c0>] (bus_add_driver+0xd4/0x1d4)
[<c03462ec>] (bus_add_driver) from [<c03474f0>] (driver_register+0xa4/0xe8)
r7:c0853100 r6:c07f2a98 r5:c07e6648 r4:c084bcc4
[<c034744c>] (driver_register) from [<c034807c>] (__platform_driver_register
+0x50/0x64)
r5:c07e6648 r4:00000006
[<c034802c>] (__platform_driver_register) from [<c07d9574>]
(davinci_mcasp_driver_init+0x18/0x20)
[<c07d955c>] (davinci_mcasp_driver_init) from [<c00087ec>] (do_one_initcall
+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2a98 r5:c07e6648
r4:00000006
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
---[ end trace 66a748b0059cebfc ]---
Unhandled fault: imprecise external abort (0x1406) at 0x00000000
Internal error: : 1406 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.14.63 #6
task: ea121b40 ti: ea122000 task.ti: ea122000
PC is at __pm_runtime_idle+0x54/0x80
LR is at davinci_mcasp_probe+0x818/0xa8c
pc : [<c0350e5c>] lr : [<c04b89ec>] psr: 20000013
sp : ea123d40 ip : ea123d60 fp : ea123d5c
r10: ea2b5380 r9 : 00000001 r8 : ea00a980
r7 : ea021b00 r6 : 00000005 r5 : ea2c7e10 r4 : ea2c7e10
r3 : ea2c7ed0 r2 : 00000000 r1 : 00000005 r0 : ea2c7e10
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 8000406a DAC: 00000015
Process swapper/0 (pid: 1, stack limit = 0xea122240)
Stack: (0xea123d40 to 0xea124000)
3d40: e99e8e10 ea2c7e10 c084bee4 ea021b00 ea123dec ea123d60 c04b89ec c0350e14
3d60: 00002000 ea2c5900 e99e8e10 00000000 ea2c6ea0 00000008 ea78c24c 00000001
3d80: 00000084 e99eac18 c0755c76 ea2c6ea0 e99eab88 00000001 00000000 c07e6654
3da0: ea123dd4 ea123db0 c013bcb8 c013d284 00000001 ea2c7e10 ea2c7e18 00000000
3dc0: 00000000 ea2c7e10 c084bcc4 c084bcc4 00000000 c07d955c 00000000 c07e6654
3de0: ea123e04 ea123df0 c0348150 c04b81e0 ea2c7e10 00000000 ea123e24 ea123e08
3e00: c0346c58 c034813c ea2c7e10 ea2c7e44 c084bcc4 c0346dac ea123e44 ea123e28
3e20: c0346e1c c0346ba8 00000000 00000000 ea123e48 c084bcc4 ea123e6c ea123e48
3e40: c0345320 c0346db8 ea1169dc ea2b5334 c084bcc4 e9a7da80 00000000 c0831440
3e60: ea123e7c ea123e70 c034679c c03452d0 ea123ea4 ea123e80 c03463c0 c0346788
3e80: c076e805 ea123e90 c084bcc4 c07e6648 c07f2a98 c0853100 ea123ebc ea123ea8
3ea0: c03474f0 c03462f8 00000006 c07e6648 ea123ecc ea123ec0 c034807c c0347458
3ec0: ea123edc ea123ed0 c07d9574 c0348038 ea123f5c ea123ee0 c00087ec c07d9568
3ee0: c0581ad4 c05844d4 ea123f2c eb7ff6d8 ea123f00 ea123f00 c004dc58 c004dbec
3f00: eb7ff6d8 eb7ff6eb ea123f5c ea123f18 c004dda4 c004dc3c 00000000 c07ad3b8
3f20: 00000006 00000006 000000c4 c07ac918 ea123f5c 00000006 c07e6648 c07f2a98
3f40: c0853100 000000c4 00000000 c07e6654 ea123f94 ea123f60 c07afcac c000875c
3f60: 00000006 00000006 c07af558 ea123f78 c0853100 c0579178 00000000 00000000
3f80: 00000000 00000000 ea123fac ea123f98 c057918c c07afbb4 ea122000 00000000
3fa0: 00000000 ea123fb0 c000e380 c0579184 00000000 00000000 00000000 00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000 4b18185e c723135b
Backtrace:
[<c0350e08>] (__pm_runtime_idle) from [<c04b89ec>] (davinci_mcasp_probe+0x818/0xa8c)
r7:ea021b00 r6:c084bee4 r5:ea2c7e10 r4:e99e8e10
[<c04b81d4>] (davinci_mcasp_probe) from [<c0348150>] (platform_drv_probe+0x20/0x50)
r10:c07e6654 r9:00000000 r8:c07d955c r7:00000000 r6:c084bcc4 r5:c084bcc4
r4:ea2c7e10
[<c0348130>] (platform_drv_probe) from [<c0346c58>] (driver_probe_device+0xbc/0x210)
r5:00000000 r4:ea2c7e10
[<c0346b9c>] (driver_probe_device) from [<c0346e1c>] (__driver_attach+0x70/0x94)
r7:c0346dac r6:c084bcc4 r5:ea2c7e44 r4:ea2c7e10
[<c0346dac>] (__driver_attach) from [<c0345320>] (bus_for_each_dev+0x5c/0x98)
r6:c084bcc4 r5:ea123e48 r4:00000000 r3:00000000
[<c03452c4>] (bus_for_each_dev) from [<c034679c>] (driver_attach+0x20/0x28)
r7:c0831440 r6:00000000 r5:e9a7da80 r4:c084bcc4
[<c034677c>] (driver_attach) from [<c03463c0>] (bus_add_driver+0xd4/0x1d4)
[<c03462ec>] (bus_add_driver) from [<c03474f0>] (driver_register+0xa4/0xe8)
r7:c0853100 r6:c07f2a98 r5:c07e6648 r4:c084bcc4
[<c034744c>] (driver_register) from [<c034807c>] (__platform_driver_register
+0x50/0x64)
r5:c07e6648 r4:00000006
[<c034802c>] (__platform_driver_register) from [<c07d9574>]
(davinci_mcasp_driver_init+0x18/0x20)
[<c07d955c>] (davinci_mcasp_driver_init) from [<c00087ec>] (do_one_initcall
+0x9c/0x140)
[<c0008750>] (do_one_initcall) from [<c07afcac>] (kernel_init_freeable+0x104/0x1d0)
r10:c07e6654 r9:00000000 r8:000000c4 r7:c0853100 r6:c07f2a98 r5:c07e6648
r4:00000006
[<c07afba8>] (kernel_init_freeable) from [<c057918c>] (kernel_init+0x14/0xec)
r10:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0579178 r4:c0853100
[<c0579178>] (kernel_init) from [<c000e380>] (ret_from_fork+0x14/0x34)
r4:00000000 r3:ea122000
Code: eb08c314 ea00000a e28030c0 f57ff05b (e1932f9f)
---[ end trace 66a748b0059cebfd ]---
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

CPU1: stopping
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D W 3.14.63 #6
Backtrace:
[<c001169c>] (dump_backtrace) from [<c0011838>] (show_stack+0x18/0x1c)
r6:00000000 r5:20000193 r4:00000000 r3:00200040
[<c0011820>] (show_stack) from [<c057d35c>] (dump_stack+0x78/0x98)
[<c057d2e4>] (dump_stack) from [<c0013130>] (handle_IPI+0xc4/0x150)
r5:00000005 r4:00000001
[<c001306c>] (handle_IPI) from [<c0008520>] (gic_handle_irq+0x60/0x68)
r7:ea141fac r6:c07fe978 r5:ea141f78 r4:fa212000
[<c00084c0>] (gic_handle_irq) from [<c0582740>] (__irq_svc+0x40/0x70)
Exception stack(0xea141f78 to 0xea141fc0)
1f60: ffffffed 00000000
1f80: 29f75000 00000000 ea140000 00000015 10c0387d c0853380 8000406a 412fc0f2
1fa0: 00000000 ea141fcc ea141fc0 ea141fc0 c000ef20 c000ef24 60000013 ffffffff
r6:ffffffff r5:60000013 r4:c000ef24 r3:c000ef20
[<c000eeec>] (arch_cpu_idle) from [<c006e200>] (cpu_startup_entry+0xbc/0x124)
[<c006e144>] (cpu_startup_entry) from [<c0012e08>] (secondary_start_kernel
+0x11c/0x138)
[<c0012cec>] (secondary_start_kernel) from [<800085c4>] (0x800085c4)
r4:aa12806a r3:c00085ac



Could you help me, or give me some suggestions. thank you.

LM5175EVM-HP: Switching frequency when the low dropout

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0
0

Part Number:LM5175EVM-HP

Hi,

I received the following question from my customer.

The switching frequency decrease when the low dropout  as follows;

※ The extracting from ": SNVU465"

In this case, does the switching frequency depend on the minimum off time?

Best Regards,

Kuramochi

AFE4300: How to determine tissue contact using BCM

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0
0

Part Number:AFE4300

Dear Community,

I'm using AFE4300 for measuring body composition. I made some electrodes and connect them to IOUT and VSENSE. However in idle state (no skin contact), I get BCM reading about I:1000~2000 Q:-60~+60 in IQ mode, which is approximately 100~200 Ohms. In working state(skin contact), I get BCM reading in hundreds. But I cannot guarantee if others may get higher results.

So how can I tell if there is skin contact from the data?

Thank you very much!

c6657 evm power consumption

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hi TI professors,

The c6657 evm provide a powe consumption table about evm and  the sdram use 1650 mW .But when I use the DDR3 sdram power consumption provieded by Micron to estimation, it just have 480mW.is there difference in method about DDR3 SDRAM power consumption?

MSP430F5336: Is there a EVM to test the DAC on MSP430F5336?


CCS: CCS 7.0 Unable to Install Newly Rediscovered Products

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0
0

Tool/software: Code Composer Studio

After I 'Select All' on Install Newly Rediscovered Products, I press 'Install'.

I get following popup:

An error occurred while collecting items to be installed
session context was:(profile=epp.package.cpp, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: binary,org.eclipse.platform.ide.executable.gtk.linux.x86_64,4.6.0.I20160606-1100

CC2541-Q1: Quad role on CC2541-Q1

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0

Part Number:CC2541-Q1

Hello,

Does CC2541-Q1 support quad role (Peripheral, Central, Observer and Broadcaster) concurrently?
If that is possible, each roles is processing in time division, how long time take to switch the roles?

Best Regards,

Nomo

CC2541-Q1: Supported function of CC2541-Q1

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0

Part Number:CC2541-Q1

Hello,

Does CC2541-Q1 support the following functions provided by the Bluetooth specification?
- Pairing Authentication method
- Security Mode
- Security Level

Best Regards,

Nomo

TS5A9411: leakage current

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0

Part Number:TS5A9411

Hello Team,

Do we have right solution which is similar with TS5A9411, and the ON-state and OFF-state leagkage current is ~pA, thanks

Regards,

Nanfang

Linux/TPS23752EVM-145: Reference SCHr

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Part Number:TPS23752EVM-145

Tool/software: Linux

Hi,

i was wondering that is there a reference SCH available can be downloaded, in OrCAD Capture Software?

thanks

Jay

TMS320C6678: EVM heatsink removal

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0
0

Part Number:TMS320C6678

Hi,

I have TMS320C6678EVM and want to remove heat sink to replace to lower heat sink, but it seems like heat sink is glued with DSP chip.

Is there any safe way to remove heat sink from DSP ?

Regards,

Stellar

WILINK8-GNSS-DRIVER: How to test GNSS/GPS on WL187xQ

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Part Number:WILINK8-GNSS-DRIVER

Background: performing production line tests on Wilink 1873Q. I am able to perform production line test of Wi-Fi using Calibrator and Bluetooth using TI bluetooth stack (Bluetopia), but have no clue regarding GNSs/GPS testing.

Problem: After studying following document, it is not clear how to send AI2 commands via HCI ports.

Question/Discussion: TI: could you please provide some examples with recommended hardware setup? Is it possible to communication to GPS via HCI UART port + PC? What's the I2C register address of this GNSS module?

Many thanks,

1. WL187x and WL17xQ GPS interface control Document Air Independent Interface (AI2), SWRU322

2. Wilink-8 GPS Production-Line Tests, SWRA406

3. WL18XX GNSS Driver GLSDK 7.x Release notes


CCS/TMS320C5535: C5535 using DMA to receive UART, not return Interrupt.

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Part Number:TMS320C5535

Tool/software: Code Composer Studio

Hi all,

I am using DSP/BIOS config HWI_INT8 for DMA Interrupt. - useDispatcher : Dma_Isr.

Config Uart and DMA : 

UartSetup.clkInput = sysClk;

status = SYS_setEBSR(CSL_EBSR_FIELD_PPMODE,CSL_EBSR_PPMODE_1);
ASSERT(status == CSL_SOK);

/* Initialize CSL UART module */
status = UART_init(&UartObj,CSL_UART_INST_0,UART_POLLED);
ASSERT(status == CSL_SOK);

status = SYS_setEBSR(CSL_EBSR_FIELD_PPMODE,CSL_EBSR_PPMODE_1);
ASSERT(status == CSL_SOK);

/* Handle created*/
UartHandle = (CSL_UartHandle)(&UartObj);

status = UART_setup(UartHandle,&UartSetup);
ASSERT(status == CSL_SOK);

//Uart_Test();

/* Configure the DMA channel for UART receive */
DmaConfig.pingPongMode = CSL_DMA_PING_PONG_DISABLE;
DmaConfig.autoMode = CSL_DMA_AUTORELOAD_ENABLE;
DmaConfig.burstLen = CSL_DMA_TXBURST_1WORD;
DmaConfig.trigger = CSL_DMA_EVENT_TRIGGER;
DmaConfig.dmaEvt = CSL_DMA_EVT_UART_RX;
DmaConfig.dmaInt = CSL_DMA_INTERRUPT_ENABLE;
DmaConfig.chanDir = CSL_DMA_READ;
DmaConfig.trfType = CSL_DMA_TRANSFER_IO_MEMORY;
DmaConfig.dataLen = (TRANSASM_RDBUF_SIZE*4);
DmaConfig.srcAddr = (Uint32)&(UartHandle->uartRegs->THR);
DmaConfig.destAddr = (Uint32)u32UartDmaReadBuf;

DmaRdHandle = CSL_configDmaForUart(&DmaRdChanObj, CSL_DMA_CHAN4);
ASSERT(DmaRdHandle != NULL);

IRQ_globalDisable();
IRQ_clearAll();
IRQ_disableAll();

IRQ_clear(DMA_EVENT);
IRQ_enable(DMA_EVENT);
IRQ_globalEnable();

status = DMA_start(DmaRdHandle);
ASSERT(status == CSL_SOK);

void Dma_Isr(void)
{
CSL_Status status;
ifrValue = CSL_SYSCTRL_REGS->DMAIFR;
CSL_SYSCTRL_REGS->DMAIFR |= ifrValue;

}

Program not return interrupt, but I am using DMA Polled ,it wil be ok!

Thanks ! 

UART receive datas will be lost on CC254x

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I only receive datas from UART by interrupt.

a. Initialize UART

void scc_init(void)
{
	PERCFG &= ~(1 << 0);
	P0SEL |= (1 << 2) | (1 << 3);
	U0CSR |= (1 << 7);
	U0GCR |= 11;
	U0BAUD |= 216;

	UTX0IF = 0;
	URX0IF = 0;
	U0CSR |= (1 << 6);
	URX0IE = 1;
	EA = 1;
	
	this_rxbuf_wi = 0;	 
}

b. Receive datas

HAL_ISR_FUNCTION(this_urx0_isr, URX0_VECTOR)
{
	HAL_ENTER_ISR();
	
	URX0IF = 0;
	this_rxbuf[this_rxbuf_wi] = U0DBUF;
	
	if(++this_rxbuf_wi >= THIS_RXBUF_SIZE){
		  this_rxbuf_wi = 0;
	}
	
	HAL_EXIT_ISR();
}

Always lose data when testing, for example

a. I send [aa bb 0a 03 12 48 10 f3 7b 98 0d 0a] from PC

b. But only received [AA BB 03 48 F3 0D 0D 0A] at this_rxbuf on CC254X

Is there any wrong? Thanks!

WL1273 doesn't wake up and cause ping packet lost and huge delay

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hi All,

I got an device with WL1273 in it, the OS is Windows Mobile 6.5, my problem is

1. When the device associated to AP in 2.4G ( both b/g and n/g mode), the WL1273 doesn't wake up as the DTIM period,

2. Even the AP buffered the ping packets for this device,  and set the bit in TIM, the WL1273 just not wake up, normally after 50 to 60 beacons the device send out PS-POLL (that's maybe a internal timer)

3. the WL1273 client behaves like U-APSD enabled, but actually this's disable all time;

4. When STA send probe request before association, the AP sends back probe response, but AP always send retry response around 6 times; but STA will send probe request again and AP send response and retries. this will keep around teens time and finally STA get response. 

5. looks like the WL1273 missed most management frame, but association/association response is ok, no retry;

6. Whenever the STA wake up, it sends a probe request frame, after get the response then send ps-poll frame,

7.the STA's listen interval  is 3, AP DTIM is 1, beacon interval is 100

please advise, thanks!

LM57: LM57 unused SENSE pin

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Part Number:LM57

I'm looking at using LM57 to turn on heater at 10C, and turn off at 15C.

I figured that I need to pick 5C hysteresis part. However since I only have one trip point, should I tie SENSE2 to ground or leave it floating?

LM5033: 2.5V VREF data

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Part Number:LM5033

Helo, Team,

My customer is exaining this part in their next power supply.

Now they request us to show the followmg data.  Would you support them if you have anything related to them?

1. 2.5V VREF data vs VIN voltage range (15v to 90v).  Though VREF spec has been specified only at VIN=48V, customer wants to see VREF data over recommended VIN range.

2. Actulal 2.5v_VREF destribution data(AVG, STD-DEV, MIN MAX) at some temparature points(-40c, 25c, 85c and 125c etc)  in recommended temparature range.

Regards,

Hidekzu Someno

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