SAMD21 Low Power

We have developed a Sigfox circuit board using the SAMD21 and a sigfox module. Although this is a standalone board we are using the Arduino bootloader (the Arduino M0 using the SAMD21 chip) as some of our libraries were previously developed for the ATMEGA328 and we want to reuse those.

We would like to get the power consumption down very low (the application note says that with the RTC we should get 10uA in sleep) so we can run off battery. Currently, this is higher and is because of the way the arduino boot loader initialises some of the registers. We have made some clock and peripheral adjustments but are not getting to the level of power expected.

We are looking for someone who has had experience with SAMD21 who can give us a block of code which turns off all the unnecessary clocks/ peripherals which we can embed in our code. We need the RTC in sleep mode to wake up the chip periodically to send the sigfox message and we need an external interrupt which when it fires we increment a counter.

If you would be able to do this please let me know. We can discuss further. Please indicate if you have experience with the SAMD21 specifically and with the low power sleep mode.

To verify the project we would take the code and using the Arduino IDE flash the firmware to our custom PCB. We would then measure the current using in sleep mode.

Skills: Arduino, Electronics, Microcontroller, Electrical Engineering, PCB Layout

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About the Employer:
( 2 reviews ) Sandton, South Africa

Project ID: #20777717

13 freelancers are bidding on average $261 for this job


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$250 USD in 7 days
(12 Reviews)

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$200 USD in 5 days
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$350 USD in 10 days
(13 Reviews)

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(10 Reviews)

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(1 Review)

We are a team of Electrical and Electronics engineers and we are Excellent in the following areas: • Embedded C Programming. • VHDL/Verilog • Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC and STM32. • ID More

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(14 Reviews)

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$750 USD in 20 days
(6 Reviews)

Hello. Thank you for inviting us to bid on your project. We have read the description, and it sound like a challenge, but we need to discuss more. We never used a SAMD21 controller before but according to the datasheet More

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(4 Reviews)

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$100 USD in 7 days
(2 Reviews)

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