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Binho Atira: FAQ

Short answers to common questions about the Binho Atira debug probe.

What can the Atira do?

Section titled “What can the Atira do?”

It is an SWD debug probe for Arm Cortex-M microcontrollers. It halts, steps and sets hardware breakpoints, programs the target’s internal flash, switches and measures a 3.3 V target rail, programs external SPI NOR flash, and bridges a UART to a serial port on the computer. See the overview.

Which software drives it?

Section titled “Which software drives it?”

Does the Atira support JTAG, RTT, SWO or UPDI?

Section titled “Does the Atira support JTAG, RTT, SWO or UPDI?”

Not yet. They are not in Atira firmware 1.0. See Not yet available.

Does the Atira power my target?

Section titled “Does the Atira power my target?”

It can. It supplies a switched 3.3 V rail on J4 pin 1, and the rail is off when the probe powers up. Switch it on before any SWD, SPI or UART traffic, even if the target has its own supply: the probe’s level shifters run from the rail. Self-powered targets are limited; read Target power before connecting one.

Can I use more than one Atira at the same time?

Section titled “Can I use more than one Atira at the same time?”

Each probe has its own serial number. list_debug_probes() lists them, and DebugProbe.open(serial="...") opens a specific one. A probe and a Supernova or a Pulsar can be open in the same Python process.

Which target chips does it work with?

Section titled “Which target chips does it work with?”

Any Arm Cortex-M target with SWD at 3.3 V. Flashing has been verified on an STM32H503RB with pyOCD, and other Cortex-M devices with a CMSIS pack should work the same way. In Mission Control 3, flashing goes through the chip’s CMSIS device pack: Install a device pack.

Not answered here?

Section titled “Not answered here?”

Try Troubleshooting, or contact us.