nrf9160 uart shell echo works on nrf9160dk (SICA B1 2110AM) but not on Thingy91 (SICA B0 1924AP)

I have two boards, a Thingy91 with "nrf9160 SICA B0 1924AP" and a nrf9160dk with "nrf9160 SICA B1 2110AM". Everything works as expected on nrf9160dk but on the Thingy91 shell echo do not work (i.e. keys pressed in console not visible until I press enter).

it seems that `nrf_uarte_event_check(uarte, NRF_UARTE_EVENT_ENDRX)`, which reads the `ENDRX` register, behaves differently on the two boards. On nrf9160dk it returns for every character received but on Thingy91 it does not return until new line.

Is this a known issue or am I missing something obvious? I have compared .config, .dts and uart register values but found no clues, except that some `RESERVED` uart register have different values between the two boards.

Some relevant configs:

CONFIG_UART_INTERRUPT_DRIVEN=y

CONFIG_UART_ASYNC_API=y

Parents

0 Albrecht Markus Schellenberger over 4 years ago

Hello,

Running the Modem Shell sample application with its default Kconfig does work as expected for me, both on a

nRF9160 DK (v1.0.0, SICA B1)

mosh:~$ *** Booting Zephyr OS build v3.0.99-ncs1  ***                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                              
MOSH version:       v2.0.0                                                                                                                                                                                                                                                                                                    
MOSH build id:      custom                                                                                                                                                                                                                                                                                                    
MOSH build variant: dev                                                                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                              
Network registration status: searching                                                                                                                                                                                                                                                                                        
Currently active system mode: LTE-M                                                                                                                                                                                                                                                                                           
LTE cell changed: ID: 21250048, Tracking area: 31401                                                                                                                                                                                                                                                                          
RRC mode: Connected                                                                                                                                                                                                                                                                                                           
PDN event: PDP context 0 activated                                                                                                                                                                                                                                                                                            
Network registration status: Connected - home network                                                                                                                                                                                                                                                                         
PSM parameter update: TAU: 1152000, Active time: 20 seconds                                                                                                                                                                                                                                                                   
PDN event: PDP context 0 IPv6 up                                                                                                                                                                                                                                                                                              
Modem config for system mode: LTE-M                                                                                                                                                                                                                                                                                           
Modem config for LTE preference: No preference, automatically selected by the modem                                                                                                                                                                                                                                           
Currently active system mode: LTE-M                                                                                                                                                                                                                                                                                           
Modem FW version:      mfw_nrf9160_1.3.2                                                                                                                                                                                                                                                                                      
Device ID:             nrf-352656109830011                                                                                                                                                                                                                                                                                    
Operator full name:   ""                                                                                                                                                                                                                                                                                                      
Operator short name:  ""                                                                                                                                                                                                                                                                                                      
Operator PLMN:        "24201"                                                                                                                                                                                                                                                                                                 
Current cell id:       21250048 (0x01444000)                                                                                                                                                                                                                                                                                  
Current phy cell id:   177                                                                                                                                                                                                                                                                                                    
Current band:          20                                                      
Current TAC:           31401 (0x7AA9)  
Current rsrp:          50: -91dBm  
Current snr:           36: 12dB
Mobile network time and date: 22/06/28,07:52:41+08
PDP context info 1:                    
  CID:                0                                                        
  PDN ID:             0                                                        
  PDP context active: yes       
  PDP type:           IPV4V6                                                   
  APN:                telenor.smart                                            
  IPv4 MTU:           1500                                                     
  IPv6 MTU:           1500                                                     
  IPv4 address:       10.50.79.182                                             
  IPv6 address:       2a02:2121:6ba:66b5::2b44:30a1
  IPv4 DNS address:   193.213.112.4, 130.67.15.198
  IPv6 DNS address:   2001:4600:4:fff::52, 2001:4600:4:1fff::52
RRC mode: Idle                                                                 
mosh:~$ ping -d google.com                                                     
Initiating ping to: google.com                                                 
RRC mode: Connected                                                            
Source IP addr: 10.50.79.182                                                   
Destination IP addr: 142.250.74.14                                             
Pinging google.com results: time=0.039secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.052secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.112secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.046secs, payload sent: 0, payload received 0
Ping statistics for google.com:                                                
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
    Minimum = 39ms, Maximum = 112ms, Average = 62ms
Pinging DONE                                                                   
RRC mode: Idle                                                                 
mosh:~$

and Thingy:91 (v1.4.0, SICA B0).

mosh:~$ *** Booting Zephyr OS build v3.0.99-ncs1  ***
                                                                               
MOSH version:       v2.0.0
MOSH build id:      custom         
MOSH build variant: dev 
                                                                               
                                                                               
                                                                               
Network registration status: searching                                                                                                                                                                                                                                                                                        
Currently active system mode: LTE-M
LTE cell changed: ID: 21250048, Tracking area: 31401
RRC mode: Connected
PDN event: PDP context 0 activated
Network registration status: Connected - roaming
PSM parameter update: TAU: 9000, Active time: -1 seconds
Modem config for system mode: LTE-M
Modem config for LTE preference: No preference, automatically selected by the modem
Currently active system mode: LTE-M
Modem FW version:      mfw_nrf9160_1.3.1
Device ID:             nrf-352656101085176
Operator full name:   ""
Operator short name:  ""
Operator PLMN:        "24201"
Current cell id:       21250048 (0x01444000)
Current phy cell id:   177
Current band:          20
Current TAC:           31401 (0x7AA9)
Current rsrp:          45: -96dBm
Current snr:           37: 13dB
Mobile network time and date: 22/06/28,08:16:11+08
PDP context info 1:
  CID:                0
  PDN ID:             0
  PDP context active: yes
  PDP type:           IP
  APN:                ibasis.iot
  IPv4 MTU:           1430
  IPv4 address:       10.160.233.49
  IPv6 address:       ::
  IPv4 DNS address:   62.93.146.209, 216.168.184.184
  IPv6 DNS address:   ::, ::
RRC mode: Idle
mosh:~$ ping -d google.com
Initiating ping to: google.com
RRC mode: Connected
Source IP addr: 10.160.233.49
Destination IP addr: 142.250.179.174
Pinging google.com results: time=0.079secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.130secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.068secs, payload sent: 0, payload received 0
Pinging google.com results: time=0.142secs, payload sent: 0, payload received 0
Ping statistics for google.com:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
    Minimum = 68ms, Maximum = 142ms, Average = 104ms
Pinging DONE
mosh:~$

However, with the default configuration, only:

CONFIG_UART_INTERRUPT_DRIVEN=y

is set, while:

# CONFIG_UART_ASYNC_API is not set

Some relevant configs:

CONFIG_UART_INTERRUPT_DRIVEN=y

CONFIG_UART_ASYNC_API=y

Could enabling both APIs have any impact on the UART performance for the Thingy:91? The Zephyr documentation also states that only features needed should be enabled. If you disable the asynchronous API, does that make any difference on your Thingy:91?

Regards,

Markus

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