Questions about The Global Variable dp_status
Hi professionals! I need some help from you again.In the PROFIBUS Slave on AM1810 User´s manual, The Global Variable dp_status，dp_status Bit 6 - Output data were received (dp_status Bit 0 - Timeout...
View Articleomapl138 ethernet
Sometimes the ethernet connector lights are flashing on and off and no connection can be made through ethernet to the omapWhat could cause that behaviour ?
View ArticleEMIFA access (Read/write) effect on DMA operation [C674x DSP]
Dear experts,I am using TMS320C6747 on a project, there is an EDMA engine for accessing data via McASP and it works without any problem, as soon as I try to access EMIFA through CPU (this is a 32 bit...
View ArticleMax Frequency of 64-Bit Timer Plus (tms320c6748)
I've reviewed several resources and just want to verify if I understand correctly what the maximum speed of the 64-Bit Timer is. I'm controlling a tms320c6748. Looking at the OMAP-L138 C6-Integra™...
View Article10Mbit/sec transfer limit for DaVinci DA850/OMAP-L138/AM18x EVM
Hello, We are using a OMAP-L138 module, and the Ethernet seems to be connecting at 100Mbit/second (indicated by the console message from the ARM processor, as well as by the lights on the Ethernet...
View Articleheap configuration when applying MessageQ in Syslink
I am developing my OMAPL138 board, and I plan to use MessageQ in Syslink_2_21_01_05 for communication for ARM and DSP.In the example of MessageQ provided by TI, four parameters for the heaps applied by...
View ArticleOMAP L138 GPIO interrupts in the same bank
Hi,OMAP L138 DSP is receiving GPIO interrupts in the same bank (GPIO Bank 4) on different GPIO pins, at the same instant.On receiving GPIO bank 4 interrupt, I read INTSTAT45 register and found that...
View ArticleChange McASP clock
I want to lower down McASP clock from 48KHz to 24KHz.Please help me.
View ArticleC6748's USB 2.0 Port : Very low data transfer rate
Dear All,I've a question about the data transfer rate of the USB 2.0 port on C6748. Based on Starterware's USB example code usb_dev_serial, I've written a simple FW which does nothing but generates and...
View ArticleOMAP-L138 LCDK VPIF raw data capture mode problem
HiI have reference the sample code( vpif_lcd_loopback project)from OMAPL138_StarterWare_1_10_04_01, and It's work. Then I try to do raw data capture mode via camera sensor on my board (OMAP-L138 LCDK...
View ArticleC6746 EMIFA access effects SPI with DMA
Dear experts,I am using C6476.I access FRAM with EMIFA,and EDMA is used to read 16bits ADC sampling data by SPI interface.When I access FRAM,I miss one sampling data.But without FRAM access, everything...
View ArticleDecrease McASP Transmit/Receive Clock
I'm developing on OMAP-L137Below are the McASP transmit setting./* TX */ mcasp->regs->XMASK = 0xffffffff; // No padding used mcasp->regs->XFMT = 0x00008078; // MSB 16bit, 1-delay, no pad,...
View ArticleHow to hold GPIO's output drive status when watchdog reset DSP
Dear experts,I use watchdog to reset CPU,but I don't want to reset GPIO because I hope GPIO hold its output drive status.How can I do this?Best Regards!
View ArticleLCD Driver for OMAP-138?
Hi , everyone Now, I have OMAPL138-SOM EVM boart ,In the Baseboard J29 has a VPIF interface;now I want design another board to implement to connect a 4.3’ lcd to the L138 Baseboard. Now,I have...
View ArticleUVC Camera support on AM170x Linux
Dear all,Please help us to check this question.We want to use USB 2.0 Hi-Speed Host on AM1707 to get HD image (+1.3Mpixel) from USB Camera.It seems that UVC driver on AM170x Linux can get highest...
View ArticleClik here to view.
Failed to run Starterware's example code usb_dev_msc on LCDKC6748
Dear All,I fail to run the C6748 Starterware example usb_dev_msc on LCDKC6748. In CCS I can build usb_dev_msc, connect to LCDKC6748 via JTAG (Below is the output message from Console),C674X_0: Output:...
View ArticlePorting AM335X Starterware example code usb_dev_comp_mouse_ser to C6748
Dear All,I've a question about running the AM335X Starterware example code usb_dev_comp_mouse_ser. After I porting it to C6748, now it runs on our own (custom) board. After using...
View Articleomapl138 lcdk V4L2 problem
I am a new user for omapl138 lcdk, dont know much about linux. Recently i want to capture video with V4L2 driver and a pal camera, I use the following document to set my own project. But i can not find...
View ArticleCache enabled, DSP-RESET / L2-memory corrupt
Greetings,Recently i am facing problem of DSP-RESET when cache is enabled,and i am using cachable ddr2 memory section(using #pragma data_section to place buffer there.)when cache is disabled my code is...
View ArticleMixing C-Assembly language code, Optimization ON, Code ouput Incorrect
Greetings,I have C source code, which call an assembly function and this assembly function access global variables, passed as argument to this function.Now code works fine when optimization is OFF and...
View Article