Zephyr4Microchip/zephyr
Feb 2026 – Feb 2026
1 Month active
Languages Used
C
Technical Skills
DMA managementUART communicationdevice treedevice tree configurationembedded systemslow-power design
Waqar Ahmed
PROFILE
Waqar Ahmed
Waqaryounas Awan developed UART1 asynchronous API board support for the Zephyr4Microchip/zephyr repository, targeting both the NUCLEO_L4R5ZI and nRF9151DK boards. He implemented DMA-enabled LPUART1 on the NUCLEO_L4R5ZI, configuring DMAMUX channel mappings and validating communication through hardware loopback at 115200 baud. For the nRF9151DK, he delivered a GPIO-based UART1 async overlay with low-power sleep state integration. His work involved detailed device tree configuration and DMA management in C, focusing on efficient UART communication and reduced CPU usage. The feature strengthened Zephyr’s UART1 async API foundation, demonstrating depth in embedded systems and low-power design.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
1
Lines of code
51
Activity Months1
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Work History
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Zephyr4Microchip/zephyr: Delivered UART1 asynchronous API board support across two boards. On NUCLEO_L4R5ZI: DMA-enabled LPUART1 with TX/DMA channel mappings (TX DMAMUX slot 34, RX DMAMUX slot 35), pins PG7/PG8, baud 115200, loopback validated. On nRF9151DK: UART1 async API overlay over GPIO with low-power sleep state (TX P0.29, RX P0.28). Implemented devicetree overlays and DMAMUX mappings. Testing included hardware loopback validation. Commits implementing this work: 5a69c851f95a81e576885a07992f2cd4c3993fe7; 5cbc042af171ae3597c8dadf4aedfb5481be4502. No major bugs fixed this month; emphasis on cross-board UART1 support and performance improvements. Impact: enables efficient UART communication with reduced CPU usage and power, across two boards; strengthens Zephyr UART1 async API foundation. Technologies/skills demonstrated: DMA configuration, DMAMUX, devicetree overlays, GPIO-based UART, low-power design, hardware testing (loopback).
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for Zephyr4Microchip/zephyr: Delivered UART1 asynchronous API board support across two boards. On NUCLEO_L4R5ZI: DMA-enabled LPUART1 with TX/DMA channel mappings (TX DMAMUX slot 34, RX DMAMUX slot 35), pins PG7/PG8, baud 115200, loopback validated. On nRF9151DK: UART1 async API overlay over GPIO with low-power sleep state (TX P0.29, RX P0.28). Implemented devicetree overlays and DMAMUX mappings. Testing included hardware loopback validation. Commits implementing this work: 5a69c851f95a81e576885a07992f2cd4c3993fe7; 5cbc042af171ae3597c8dadf4aedfb5481be4502. No major bugs fixed this month; emphasis on cross-board UART1 support and performance improvements. Impact: enables efficient UART communication with reduced CPU usage and power, across two boards; strengthens Zephyr UART1 async API foundation. Technologies/skills demonstrated: DMA configuration, DMAMUX, devicetree overlays, GPIO-based UART, low-power design, hardware testing (loopback).
February 2026
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
DMA managementUART communicationdevice treedevice tree configurationembedded systemslow-power design
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