New boards

[LaZsolt]

I found two new MiniEVB boards on Aliexpress

LQFP32 MCU with USB-C and 16 MHz crystal	LQFP48 MCU with USB-C

[ithinkido]

I have one of the purple ones. I managed to flash a blink sketch on it , Worked great. Sadly I tried the EEPROM write example on in and it looks like that corrupted the boot loader and the board is not reachable. Waiting on delivery of a second board to use as ISP to flash new boot loader.

[FishmannJ]

Stalo se mi to samé. Je nějaká rada? Chci desku použít k řízení laserového gravírování. Jak na flash gbrl?

[trimarco232]

Hi,
now at aliexpress, a 48 pins, purple board with crystal
https://fr.aliexpress.com/item/1005004317038120.html?spm=a2g0o.productlist.0.0.6fdd7840UMCqiH&pdp_ext_f=%7B%22sku_id%22%3A%2212000028730955312%22%7D&pdp_npi=2%40dis%21EUR%213.02%213.02%21%21%213.76%21%21%402100bdec16604000419162914e3d46%2112000028730955312%21sea&curPageLogUid=xL1Z9hERc549
pin# 15 of the 48 pin devices is called AC0P / OC3A it has no PORT
if you want to use it as a simple io, you must :

• as an input, go through the analog comparator 0
• as an output :
  if you use timer3 for pwm : use a duty = 0 for LOW , or a duty = the period for High
  take care that in the case of duty = 0 (OC3A=0) one won't obtain a real LOW state, but a short glitch at each period (not visible if driving a LED)
  if you don't use timer3 for pwm, use the following code :
  in setup :
  PMX0 |= _BV(WCE) ; // jumps the lock
PMX1 |= _BV(C3AC) ; // put the pin on OC3A
TCCR3A = _BV(COM3A1) ; // COM1A1 = 1 : Set OC1A/OC1B on compare match
  then for HIGH :
  TCCR3A |= _BV(COM3A0) ; // COM1A0 = 1 : Set OC1A/OC1B on compare match
TCCR3C = _BV(FOC3A) ; // Force Output Compare for Channel A
  and for LOW :
  TCCR3A &= ~_BV(COM3A0) ; // COM1A0 = 0 : Clear OC1A/OC1B on compare match
TCCR3C = _BV(FOC3A) ; // Force Output Compare for Channel A