TMC2208: not all UART devices recognized (2 replies)

Hello there,

today I changed my drivers from A4988 to TMC2208 (UART mode). I soldered the pads on the bottom of the driver boards together and made some wires for the serial connection
[attachment 111655 IMG_20190611_212523_HDR.jpg]

As you can see the 1K resistor is soldered in line with the green wire thus the green wire should be TX. As mentioned here not all pins on the Mega2560 (I am using the MKS Gen L) are RX capable but this pinout should be fine (correct??)

  #define X_SERIAL_TX_PIN    40
  #define X_SERIAL_RX_PIN    63
  #define X2_SERIAL_TX_PIN   -1
  #define X2_SERIAL_RX_PIN   -1

  #define Y_SERIAL_TX_PIN    59
  #define Y_SERIAL_RX_PIN    64
  #define Y2_SERIAL_TX_PIN   -1
  #define Y2_SERIAL_RX_PIN   -1

  #define Z_SERIAL_TX_PIN    19 //MS default 42
  #define Z_SERIAL_RX_PIN    11 //MS default 65
  #define Z2_SERIAL_TX_PIN   -1
  #define Z2_SERIAL_RX_PIN   -1

  #define E0_SERIAL_TX_PIN   42 //MS default 44
  #define E0_SERIAL_RX_PIN   65 //MS default 66
  #define E1_SERIAL_TX_PIN   44 //MS default -1
  #define E1_SERIAL_RX_PIN   66 //MS default -1

And if I am not colorblind this should match it (correct??)
[attachment 111656 Bild1.jpg] [attachment 111657 IMG_20190611_213744.jpg]

Unfortunately only the E1 driver will be recognized by Marlin because M122 responds:

21:18:19.600 : X	Y	Z	E0	E1
21:18:19.634 : Enabled		false	false	false	false	true
21:18:19.636 : Set current	800	800	800	800	800
21:18:19.667 : RMS current	1436	1436	1436	1436	795
21:18:19.697 : MAX current	2025	2025	2025	2025	1121
21:18:19.699 : Run current	25/31	25/31	25/31	25/31	25/31
21:18:19.700 : Hold current	12/31	12/31	12/31	12/31	12/31
21:18:19.731 : CS actual		0/31	0/31	0/31	0/31	12/31
21:18:19.760 : PWM scale		0	0	0	0	14
21:18:19.788 : vsense		0=.325	0=.325	0=.325	0=.325	1=.18
21:18:19.817 : stealthChop	false	false	false	false	true
21:18:19.847 : msteps		256	256	256	256	16
21:18:19.875 : tstep		0	0	0	0	1048575
21:18:19.875 : pwm
21:18:19.878 : threshold		0	0	0	0	0
21:18:19.878 : [mm/s]		-	-	-	-	-
21:18:19.907 : OT prewarn	false	false	false	false	false
21:18:19.907 : OT prewarn has
21:18:19.910 : been triggered	false	false	false	false	false
21:18:19.938 : off time		0	0	0	0	5
21:18:19.968 : blank time	16	16	16	16	24
21:18:19.968 : hysteresis
21:18:19.997 : -end		-3	-3	-3	-3	2
21:18:20.025 : -start		1	1	1	1	3
21:18:20.025 : Stallguard thrs
21:18:20.027 : DRVSTATUS	X	Y	Z	E0	E1
21:18:20.056 : stst						X
21:18:20.084 : olb
21:18:20.112 : ola
21:18:20.141 : s2gb
21:18:20.168 : s2ga
21:18:20.197 : otpw
21:18:20.225 : ot
21:18:20.253 : 157C
21:18:20.282 : 150C
21:18:20.310 : 143C
21:18:20.338 : 120C
21:18:20.339 : s2vsa
21:18:20.339 : s2vsb
21:18:20.347 : Driver registers:	X = 0x00:00:00:00
21:18:20.353 : Y = 0x00:00:00:00
21:18:20.359 : Z = 0x00:00:00:00
21:18:20.365 : E0 = 0x00:00:00:00
21:18:20.372 : E1 = 0xC0:0C:00:00

I already tried switching the drivers one for another but it will only recognize E1 with any one of the drivers.

So I am hoping that one of you can tell me what I am missing.

Thanks in advance