Grant Whitacre
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Votes on activity by Grant Whitacre-
Apollo4 Graphics Library API Guidelines
Please see attached for guidelines for using the Apollo4 Graphics Library API.
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Q&A: What is the difference between the BUSY and TXBUSY bits in the UART Flag Register?
The difference between the TXBUSY and BUSY bits is that the TXBUSY bit indicates that the UART is in the middle of a transmit operation and when it clears, the TXCMP bit is set. The TXBUSY bit is t...
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Apollo3 Blue Plus Pre-alpha SDK Release
This is the pre-alpha SDK, release 2019.11.26, for the Apollo3 Blue Plus MCU. https://s3-us-west-1.amazonaws.com/s3.ambiqmicro.com/Apollo3P-Pre_Alpha_SDK-2019.11.26.zip
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SPI to USB Data Streaming on Apollo3 Blue and Apollo3 Blue Plus (AMU2S)
This page introduces the SPI-to-USB data streaming interface from Apollo3 Blue to PC. This is a high speed interface using IOM module on Apollo3 Blue device to stream data out to PC for debug purp...
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Design Guideline: Selecting Proper Inductors for the BLE and SIMO Bucks on Apollo3 MCUs
Overview This design guideline describes the recommended BLE and SIMO buck inductors for Apollo3 MCUs. Applicable Silicon Revisions and Packages This design guideline applies to all versions and ...
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Design Guideline: Using an External 32.768 kHz Clock Input on XO on Apollo MCUs
Overview This design guideline describes the recommended external circuit components and MCU pins required to supply an external 32.768 kHz clock to the Apollo2, Apollo2 Blue, and Apollo3 Blue MCUs...
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Q&A: Why do I sometimes see unexpected faults when they should not be happening?
Full Question: Why do I sometimes see unexpected faults on the Apollo3 Blue, such as INVSTATE and NOCP, when there is no reason why they should be happening? Answer: The problem is caused by the...
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Q&A: How can I get visibility to HAL and BSP C-code execution when debugging?
Full question(s): I want to have visibility of, and single-step through, C code execution for HAL and BSP functions while debugging. What do I need to set in the IDE to do that? Answer(s): In I...
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Q&A: Why doesn't the Makefile work in the SDK's Apollo3_EVB BSP folder?
Full question(s): I need to make a change to the default pin mapping, and I am trying to rebuild the am_bsp_pins.c and .h files for Apollo3 in the SDK 2.1.0 release. However, after I make my chang...
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Q&A: Is there anything special that I need to do when using a 32.768 kHz crystal to clock the Apollo3 B0?
Full question(s): Is there any special initialization that needs to be done when using a 32.768 kHz crystal to clock the Apollo3 Blue, revision B0? Answer(s): This only applies to Apollo3 B0 silico...