Part Number:TMS320DM8148
Tool/software: Linux
Hi,
I am working on video analytics and I would like to draw line between two points with using VCAP_BLINDAREACONFIG on Arm side. I am using DVR_RDK.
How I can draw a line using VCAP_BLINDAREACONFIG?
↧
Linux/TMS320DM8148: How to use BLINDAREACONFIG to draw a line
↧
LM3435: About RIREFx
Part Number:LM3435
Hello Team,
My customers are planning to set ILEDx at 0.5A or less.
Is there RIREFx test data when ILEDx is set to 0.5A or less?
It is not necessary to be guaranteed data.
According to the data sheet, I think that it becomes the following formula, but the measured value and the following formula were different at 0.5A or less.
・ILEDx(A) = 24.75/Riref(Ω) x 10^3
Best regards,
Kato
↧
↧
RTOS/AM5728: PCIE bar memory mapping
Part Number:AM5728
Tool/software:TI-RTOS
Hi,
The PCIE Endpoint is expecting 2GB memory when bar0 is read. I have programmed 0xA0000000 as bar address as part of enumeration.
Now I have to do outbound address translation for the same.
In the PCIE example code I see outbound address translation is done with OB size 1MB. In my case as the BAR memory requirement is 2GB, how should i do the OB address translation.
Please let me know.
In AM5728 TRM its mentioned that the outbound window for PCIE transations starts at 0x20000000. as per the example code I want to map 0x21000000 to 0xA0000000(which is bar address i have configured as per 2GB requirement). but in the example code the OBSIZE is 1MB. In my case what OBSIZE I should configure?
↧
SN74AHCT1G14: Question about IOH/IOL conditions.
Part Number:SN74AHCT1G14
Hello guys,
One of our customers found two conditions may be error discription in electrical characteristics on page 3 in SN74AHCT1G14 datasheet (SCLS322P).
The datasheet says the curent vaiue conditions for VOH/VOL are -50mA/+50mA. Are these current condition correct?
The customer thinks +/-50uA is correct. Which value is correct?
Your reply would be appreciated.
Best regards,
Kazuya Nakai.
↧
HDC1080: Humidity correction
Part Number:HDC1080
Hi Teaam,
If the place where the HDC 1080 is mounted is about 2℃ lower than the outside air temperature, will the humidity also shift?
The amount of water vapor that can be contained in the air varies with temperature, so if you want to correct humidity, is it OK to consider the following?
P: Saturation vapor pressure (hPa) = 6.1078 × 10 ^ (7.5 t / 237.3 + t)
Saturated steam amount = 0.62198 × P / (1013.25-P)
Weight absolute humidity = Saturated steam amount × relative humidity
Calculate relative humidity using weight absolute humidity and outside air temperature.
Best Regards,
Kenji
↧
↧
Linux/DS90UB929-Q1: linux version is 4.1.15
Part Number:DS90UB929-Q1
Tool/software: Linux
Dear all,
is there linux driver of DS90UB929-Q1 for referring, the version is 4.1.15, thanks
↧
TPS65982: OVP function
Part Number:TPS65982
Hi Team,
My customer wants to know the details how the OVP funtion behaves. Could you follow the 4 questions below?
1. Does TPS65982 also watch VBUS pins for OVP even in source side operation?
2. Are the OVP function's settings also valid even in Non-PD operation?
3. Which register determines OVP threshold for Source side in both PD and Non-PD case?
4. Are there any registers to set spesific OVP voltage level like 0x28[bit 21:16, OvpTripPoint] for each PDOs?
Regards,
Takashi Onawa
↧
Compiler: Extern "C" with function having function pointer as a parameter
Tool/software: TI C/C++ Compiler
Hello!
Noticed the following on both 16.9.6.TLS and 18.1.1.LTS, when compiling
extern "C" int test(int (*)(int));
int test(int (*f)(int)) { return 0; }
The result will be the decorated function "_Z4testPFiiE", not "test", as expected, and result later in a link error. Working around, passing the function in a structure will work, but makes the call syntax awkward from C:
struct test_arg { int (*f)(int); }
extern "C" int test2(struct test_arg f);
int test2(struct test_arg f) { return 0; }
This will correctly link correctly (the name is "test2")
↧
CCS/am5728: Try to use pc trace on ccs6.2 always heap low mem
↧
↧
RTOS/LAUNCHXL-CC2640R2: Power Saving
Part Number:LAUNCHXL-CC2640R2
Tool/software:TI-RTOS
Hello,
I have developed a firmware by talking project zero as reference,
And I was measuring the current consumption of my device it is showing as 750 micro amperes in Idle state that when the device (CC2640R2-LAUNCH XL) is just in advertising mode,
So i was willing to save more power, and as i was going the power management document i have seen a standby mode where power consumption is less,
So can i use the mode in my device in Idle State where in i can reduce power consumption,
Please help me with steps to use the standby mode or any other mode where i can save power while the device is just advertising
I have gone through Power Management user guide but not able use the power Policy in my code
Please help me with this
Thank You
Utkarash
↧
TS3L110: Communictate with Multiple PHY with a single ethernet port
Part Number:TS3L110
I plan to Have a setup as shown in figure
My aim is have one single external RJ45 Ethernet port communication with 2 different boards as decided by the user. Is this a feasible configuration?? Any known issues??
Also i would like to know the physical length of signal lines allowed between TS3L110 and PHY??
↧
DS90UH948-Q1: 949-948：Connection
Part Number:DS90UH948-Q1
Dear support team;
Our customer wants the following connection.
Can we use this connection?
And,how should unused pins be?
Best Regards,
Masaaki Sugiyama
↧
Linux/PROCESSOR-SDK-AM437X: PRU usage question
Part Number:PROCESSOR-SDK-AM437X
Tool/software: Linux
Team,
I am trying to toggle couple of GPIO on PRU0. I am using the latest SDK. Following are the configuration:
DTS:
AM4372_IOPAD(0x9d0, PIN_OUTPUT | MUX_MODE3) /* cam1_data8 mode 3 PRU*/
AM4372_IOPAD(0x9f0, PIN_OUTPUT | MUX_MODE4) /* cam1_data2 mode 4 PRU */
AM4372_IOPAD(0x9f4, PIN_OUTPUT | MUX_MODE4) /* cam1_data3 mode 4 PRU */
PRU0_1 Firmware:
#define HOST_INT ((uint32_t) 1 << 31)
#define OUT_S (1 << 0) /* (AD24) cam1_data8.pr0_pru1_gpo[0] */
#define OUT_D (1 << 11) /*AE22 (cam1_data3, pr0_pru1_gpo11, MOde 0x4)*/
#define OUT_C (1 << 10) /* AD21 (cam1_data2,pr0_pru1_gpo10, Mode 0x4)*/
#define PRU_OUT_SET(x) { __R30 |= (x); }
#define PRU_OUT_CLR(x) { __R30 &= ~(x); }
#define PRU_IN(x) (__R31 & (x))
#define TO_ARM_HOST 18
#define FROM_ARM_HOST 19
/*
* Using the name 'rpmsg-pru' will probe the rpmsg_pru driver found
* at linux-x.y.z/drivers/rpmsg/rpmsg_pru.c
*/
#define CHAN_NAME "rpmsg-pru"
#define CHAN_DESC "Channel 31"
#define CHAN_PORT 31
main (){
........
......
pru_rpmsg_init(&transport, &resourceTable.rpmsg_vring0, &resourceTable.rpmsg_vring1, TO_ARM_HOST, FROM_ARM_HOST);
/* Create the RPMsg channel between the PRU and ARM user space using the transport structure. */
while (pru_rpmsg_channel(RPMSG_NS_CREATE, &transport, CHAN_NAME, CHAN_DESC, CHAN_PORT) != PRU_RPMSG_SUCCESS);
while (1) {
/* Check bit 30 of register R31 to see if the ARM has kicked us */
if (__R31 & HOST_INT) {
/* Clear the event status */
CT_INTC.SICR_bit.STATUS_CLR_INDEX = FROM_ARM_HOST;
/* Receive all available messages, multiple messages can be sent per kick */
while (pru_rpmsg_receive(&transport, &src, &dst, payload, &len) == PRU_RPMSG_SUCCESS) {
/* Echo the message back to the same address from which we just received */
// pru_rpmsg_send(&transport, dst, src, payload, len);
for (i = 0 ; i < len ; i++){
if (payload[i] == 's' || payload[i] == 'S'){
PRU_OUT_SET(OUT_S);
pru_rpmsg_send(&transport, dst, src, payload, len);
}
else if (payload[i] == 'd' || payload[i] == 'D'){
PRU_OUT_SET(OUT_D);
pru_rpmsg_send(&transport, dst, src, payload, len);
}
else if (payload[i] == 'c' || payload[i] == 'C'){
PRU_OUT_SET(OUT_C);
pru_rpmsg_send(&transport, dst, src, payload, len);
}
}
}
resource configuration:
struct ch_map pru_intc_map[] = { {18, 3},
{19, 1},
};
struct my_resource_table resourceTable = {
......................
...........................
{
TYPE_CUSTOM, TYPE_PRU_INTS,
sizeof(struct fw_rsc_custom_ints),
{ /* PRU_INTS version */
0x0000,
/* Channel-to-host mapping, 255 for unused
* Mapping Channel-0 to Host-0 (PRU0/1 R31 bit 30)
*/
HOST_UNUSED, 1, HOST_UNUSED, 3, HOST_UNUSED,
HOST_UNUSED, HOST_UNUSED, HOST_UNUSED, HOST_UNUSED, HOST_UNUSED,
/* Number of evts being mapped to channels */
(sizeof(pru_intc_map) / sizeof(struct ch_map)),
/* Pointer to the structure containing mapped events */
pru_intc_map,
},
........
........
Trying to send commands s,c,d from the linux user space (via /dev/rpmsg_31). I am able to send each command (and can read it back as well in linux) but the lines are not getting toggled. Am I missing something ?
Best Regards,
Shiv
↧
↧
CC1310: Problems programming the Chip with srfprog via cJTAG
Part Number:CC1310
Hello to all,
For a new product we made in our company, we need to implement a way to program each device easily during our production line. Unfortunately we face the problem that with the help of srfprog (cmd line tool of SmartRf Flash Programmer 2 Version 1.7.5) we cannot assure a fluent way of programming. First of all an overview of what we do have here:
- We are using the Chips version with 128kByte Flash
- We use the secondary mac address as Interface address for our proprietary communication interface for each device unique
- We use several properties for each devices that are individually by the device itself
- We do have four lines available for programming the chip: Vcc, Gnd, TMSC and TCKC --> cJTAG
- The programmer used for programming is a Olimex TMS320-XDS100-V3
- for mass production we use the console tool srfprog only
As mentioned in the list we do have several data that needs to be written onto Flash. We had to find out that it is not possible to program Flash as well as secondary MAC address in "one step" although documentation says to is possible. Therefore we made to writing cycles of it. Last but not least we added another third cycle to change/write the unique properties to one Flash area only.
Our problems we couldn't solve up to now are:
1.) Once the Chip was programmed completely for once it is impossible to directly rewrite again; the Tools (including the GUI of Smart RF Flash Programmer) indicate that the programming interface is blocked
--> We solved this by Forcing a mass erase of the Chip each time it has to be programmed
2.) Depending on the sequence of programming areas, we sometimes can program all areas sometimes only a mass erase will assure to have a try again
a.) Mass erase
b.) Write CCFG
c.) Write Device properties
d.) Write Firmware
It took us hell a lot of time to make it working that stable (our rate now is around 50% maybe 70% :( ). Is there any other tool or way of easier programming this ARM controller? Do you have further documents that show up improvements for programming CC1310F128?
It is really a pity, almost all work is done, the chip once it has got its firmware and specific data runs stable, but there is no easy way for mass producing devices now. Really unsatisfactory. Any help is highly appreciated.
Kind regards
Markus
↧
LM3644: DSBGA package Problem
↧
DAC101C081: output of dac101C081 getting loaded
Part Number:DAC101C081
I'm using DAC101C081 to drive a LED. a led in series with a resistor is connected to the dac output. the dac is getting loaded when all ones are written to its data register, with all ones in dac data register, dac is supposed to give output 3.3V and 4.8mA. because of loading dac is able to source 3.6mA at 3.1V. need help on this..
↧
LMX2594 - what is the use of Vtune pin.
I'm planning to use this chip, before that have to see the simulation results.
I can get simulation TINA simulation model for this IC?
↧
↧
CCS/TPS65982-EVM: I2C communication with TPS65982
Part Number:TPS65982-EVM
Tool/software: Code Composer Studio
Hello,
I have question regarding I2C communication with TPS65982 Evaluation module. I'm trying to read some information like available PD profiles using I2C interface. I conected my stm32f0 discovery board with TPS65982 EVM but I2C communication won't work. Library on stm for i2c is reliable because I used it without any problems with other IC, but on TPS65982 I can't makie it work. On my logic analyzer I see data that I'm sending but there is no ACK from TPS, and also no back data. Could anyone help me with some ideas what I might do wrong here ?
To reduce possible questions, below are some basic information about my set up:
- connection to I2C1 on pin 18 and 20
- I2C Clock speed: 100kHz
- Address: 0x38
- TPS65982 is sourced by some PD Charger using USB Type C connection (12V)
Thanks in advance,
Karol Mika
↧
TLV61046A: Inductor selection and maximum current
Part Number:TLV61046A
Hi,
My application is really simple. The DC/DC converter is only used for less than one second to charge a 440uF capacitor @20V.
The input is 2XAAA so minimum voltage around 2.1V. Output 20V. Charging current is limited by a P-chanel Mosfet circuit or a simple power resistor to 200mA.
With 10uH inductor, by applying the equation in the datasheet, I have iL(DC) = 2.27A and iL(P) = 2.34A.
In the datasshet, I don't understand the following reference " Normally, it is advisable to work with an inductor peak-to-peak current of less than 40% of the average inductor current for maximum output current. "
How to choose my inductor regarding my case? Do you have any recommandation? Should I need a saturation of more than 3A? I need a small package in my case because it's for a portable device.
Thank you for your support.
↧
Linux/CC1350: BBB processor-sdk-linux-AM335x
Part Number:CC1350
Tool/software: Linux
I am completing the reference design :Sub-1 GHz Sensor to Cloud Industrial Internet of Things (IoT) Gateway Reference Design. I download the prebuilt TI Linux processor SDK SD card image am335x-evm-linux-04.02.00.09.img.zip.But when I creating the SD card using this image, I can't boot the BeagleBone Black from the SD Card.The problem is connection timed out.Is there anyone konw the reason?
↧