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SAME70Q21 ASF CAN Example
Hi everyone,   I'm trying to get a very basic CAN setup working with a SAME70Q21. Unfortunately it seems that ASF doesn't have a basic CAN example for the SAME70 (although it...
Wednesday, 7 October 2020 - 21:25
SAME70 UART RX DMA Circular Linked List
Hi all,   My SAME70 receives data via the UART0 interface. I've confirmed successful implementation of the ASF UART drivers, and can see the correct data being received with...
Thursday, 9 July 2020 - 06:42
lwIP Raw TCP Data Transmission
Hi,   My SAME70Q21-based device uses the Ethernet interface to send data to a CPU situated elsewhere on the same PCB (i.e. a direct Ethernet connection, no switches or...
Thursday, 16 April 2020 - 03:45
SAME70 Timer Capture Issues
Hi,   I'm working with a SAME70 and need to calculate the frequency of an input square wave on a GPIO pin (PIO_PA5 in this example). I've read through the various Timer and...
Wednesday, 25 March 2020 - 03:22
Unable to ioport_set_pin_level for specific pins
My foray into ASF isn't going quite as planned    Following on from this post I'm looking to implement a basic bitbang sequence to a shift register. As I've never used...
Thursday, 7 November 2019 - 07:42
Shifting data from SAME70 via TWIHS
Hi,   I have an ATSAME70Q21 (144-pin) MCU on my board, which (among other things) is used to drive 3 TLC5971 LED driver ICs. The TLC5971s are essentially shift registers,...
Wednesday, 6 November 2019 - 04:20
6-layer stack confirmation
Afternoon,   I've been back and forth with various PCB manufacturers this week regarding their 'standard' 6-layer configurations. The following diagram represents the...
Sunday, 30 June 2019 - 03:49
MCU ADC input when MCU powered down
Morning,   I have an external battery which is permanently connected to my device. I have a basic A/D circuit to read the voltage of the battery (current limiting resistor...
Sunday, 23 June 2019 - 23:20
ATSAME70Q21 Dual Serial 2-Wire within QSPI
G'day,   I'm looking to interface 2 16-bit 16 channel 1Msps ADCs with an ATSAME70Q21 and am having some issues determining how best to design their interface. Each ADC has...
Sunday, 28 April 2019 - 00:28
16-channel 12V PWM output circuit
I currently have a PCA9685 LED driver IC, which offers 16 channels of individual PWM control but with only 10mA source capability. I would like to control 16 12V outputs, each at...
Saturday, 9 March 2019 - 07:15
Voltage divider for PMIC enable input
G'day,   I'm overlooking something really simple, and figured some fresh eyes will make short work of this issue!   I've just assembled the first prototype of my...
Thursday, 7 March 2019 - 21:03
Parallel analogue traces and return paths
G'day,   My PCB makes use of an 8-channel DAC, the 8 outputs of which terminate at a 2x4 2.54mm pitch through hole header. I've attached a screenshot of the DAC circuit and...
Wednesday, 7 November 2018 - 00:08

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