Activity
From 11/06/2025 to 12/05/2025
12/05/2025
- JC 09:55 PM Software Development: RE: uBoot I2C Speed Command [MityDSP L138]
- 2019 with i2c mods
Flashing u-boot based on https://support.criticallink.com/redmine/projects/arm9-platforms/wiki/Updating_devkit_to_latest_MDK - JC 09:45 PM Software Development: RE: uBoot I2C Speed Command [MityDSP L138]
- By default the 2019 u-boot doesn't support multiple i2c buses. Though I was able to tweak some code to seemingly get it working, however I don't have devices on i2c1 to determine if its actually working.
- JC 09:29 PM Software Development: RE: uBoot I2C Speed Command [MityDSP L138]
- Testing the 2019 u-boot and i2c speed command does appear to be supported though I didn't scope the lines to prove it was changing speeds.
- JC 07:47 PM Software Development: RE: Configuring OMAP-L138 peripherals from uBoot
- The latest L138 RTOS SDK 06_03_00_106 for the L138 does have documentation for MCASP and a bunch of other peripherals.
https://www.ti.com/tool/PROCESSOR-SDK-OMAPL138#downloads
https://software-dl.ti.com/processor-sdk-rtos/esd/docs/06... - JC 04:17 PM Software Development: RE: Configuring OMAP-L138 peripherals from uBoot
- Hi Michael, I created a e2e question asking TI about MCASP support on the DSP. https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1595231/omap-l138-d...
12/04/2025
- MB 08:04 PM Software Development: RE: Configuring OMAP-L138 peripherals from uBoot
- Jonathan,
If StarterWare/BareMetal are against the grain, please point me towards DSPBios code/examples that use McASP. Which version of DSP/BIOS are you using? When making a new project in CCS, do you tell CCS to target an OMAP-L138 or... - JC 07:27 PM Software Development: RE: Configuring OMAP-L138 peripherals from uBoot
- Hi Michael, We have only used the DSP with TI's DSPBios RTOS. It should already have abstraction layers for most of those peripherals.
12/03/2025
- JC 10:46 PM Software Development: RE: uBoot I2C Speed Command [MityDSP L138]
- Michael B wrote:
> Hi All,
> ...
In the 2009 u-boot, i2c set speed is not implemented. There are provisions for architecture specific implementations but there are none relevant for the L138.
https://support.criticallink.com/gitweb... - MB 09:39 PM Software Development: RE: uBoot I2C Speed Command [MityDSP L138]
- As a follow up, is there any way to test I2C 1 bus through uBoot?
- Hi All,
I'm in the middle of debugging some I2C issues and was curious how the uBoot i2c speed command is handled. It seems to take/return Hz, does that relate to baud rate, bitrate, or just SCL frequency?
The i2c speed is defaulting... - Hi all,
I am interested in running a bare metal application on just the DSP core, and would like some help configuring as many of the peripherals (I2C, McASP, UART, DMA, etc.) from within uBoot instead of in the DSP code initialization....