Le context :
-le compteur EDF : Sagem
-un RPi 3 avec Raspian Jessie à jour et fresh Install
-en wifi + ssh server + install picocom
-les configurations effectuées sont :
dans /boot/config : enable_uart=1
dans /boot/config : dtoverlay=pi3-disable-bt + systemctl disable hciuart
dans RasPi-config : interfacing options/P6 Serial/login Shell accessible over serial : No et serial port hardware enable : Yes

/var/log/messages donne :
Apr 13 17:51:03 pi-domoticz kernel: [ 1.466022] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
Apr 13 17:51:03 pi-domoticz kernel: [ 1.468652] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Apr 13 17:51:03 pi-domoticz kernel: [ 1.472077] hub 1-1:1.0: USB hub found
Apr 13 17:51:03 pi-domoticz kernel: [ 1.474696] hub 1-1:1.0: 5 ports detected
Apr 13 17:51:03 pi-domoticz kernel: [ 1.726559] NET: Registered protocol family 10
Apr 13 17:51:03 pi-domoticz kernel: [ 1.795806] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
Apr 13 17:51:03 pi-domoticz kernel: [ 1.936049] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
Apr 13 17:51:03 pi-domoticz kernel: [ 1.938725] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Apr 13 17:51:03 pi-domoticz kernel: [ 1.944188] smsc95xx v1.0.5
Apr 13 17:51:03 pi-domoticz kernel: [ 2.039585] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:13:a9:c1
Apr 13 17:51:03 pi-domoticz kernel: [ 2.135756] usb 1-1.4: new full-speed USB device number 4 using dwc_otg
Apr 13 17:51:03 pi-domoticz kernel: [ 2.297552] usb 1-1.4: New USB device found, idVendor=0403, idProduct=6015
Apr 13 17:51:03 pi-domoticz kernel: [ 2.299596] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 13 17:51:03 pi-domoticz kernel: [ 2.299608] usb 1-1.4: Product: FT230X Basic UART
Apr 13 17:51:03 pi-domoticz kernel: [ 2.299616] usb 1-1.4: Manufacturer: FTDI
Apr 13 17:51:03 pi-domoticz kernel: [ 2.299622] usb 1-1.4: SerialNumber: TINFO-1950
Apr 13 17:51:03 pi-domoticz kernel: [ 3.298443] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
Apr 13 17:51:03 pi-domoticz kernel: [ 4.085015] usbcore: registered new interface driver usbserial
Apr 13 17:51:03 pi-domoticz kernel: [ 4.085118] usbcore: registered new interface driver usbserial_generic
Apr 13 17:51:03 pi-domoticz kernel: [ 4.085201] usbserial: USB Serial support registered for generic
Apr 13 17:51:03 pi-domoticz kernel: [ 4.095941] usbcore: registered new interface driver ftdi_sio
Apr 13 17:51:03 pi-domoticz kernel: [ 4.096042] usbserial: USB Serial support registered for FTDI USB Serial Device
Apr 13 17:51:03 pi-domoticz kernel: [ 4.096328] ftdi_sio 1-1.4:1.0: FTDI USB Serial Device converter detected
Apr 13 17:51:03 pi-domoticz kernel: [ 4.096513] usb 1-1.4: Detected FT-X
Apr 13 17:51:03 pi-domoticz kernel: [ 4.097936] usb 1-1.4: FTDI USB Serial Device converter now attached to ttyUSB0
Apr 13 17:51:03 pi-domoticz kernel: [ 4.124643] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
Apr 13 17:51:03 pi-domoticz kernel: [ 4.362781] usbcore: registered new interface driver brcmfmac
Apr 13 17:51:03 pi-domoticz kernel: [ 4.522393] brcmfmac: Firmware version = wl0: Aug 7 2017 00:46:29 version 7.45.41.46 (r666254 CY) FWID 01-f8a78378
Apr 13 17:51:03 pi-domoticz kernel: [ 5.534912] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Apr 13 17:51:03 pi-domoticz kernel: [ 5.534952] brcmfmac: power management disabled
Apr 13 17:51:03 pi-domoticz kernel: [ 6.093754] Adding 102396k swap on /var/swap. Priority:-1 extents:3 across:208892k SSFS
Apr 13 17:51:03 pi-domoticz kernel: [ 6.246918] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
Apr 13 17:51:03 pi-domoticz kernel: [ 6.247131] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Apr 13 17:51:04 pi-domoticz kernel: [ 6.820977] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Apr 13 17:53:03 pi-domoticz kernel: [ 62.877401] uart-pl011 3f201000.serial: no DMA platform data
Apr 13 17:53:28 pi-domoticz kernel: [ 87.293799] random: crng init done

et root@pi-domoticz:~# picocom -b 1200 -d 7 -p e -f n /dev/ttyUSB0
picocom v1.7

port is : /dev/ttyUSB0
flowcontrol : none
baudrate is : 1200
parity is : even
databits are : 7
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv
imap is :
omap is :
emap is : crcrlf,delbs,

Terminal ready

La LED verte est bien allumée et fixe.
La LED rouge clignote lentement.

Je ne vois pas ce que j'ai raté.

Si quelqu'un a une idée je suis preneur.

Merci