diff options
| -rw-r--r-- | nuttx/TODO | 11 | ||||
| -rw-r--r-- | nuttx/configs/sim/README.txt | 26 |
2 files changed, 13 insertions, 24 deletions
diff --git a/nuttx/TODO b/nuttx/TODO index d07ad74a8..198574b95 100644 --- a/nuttx/TODO +++ b/nuttx/TODO @@ -23,7 +23,7 @@ nuttx/ (1) Pascal add-on (pcode/) (1) Documentation (Documentation/) (3) Build system / Toolchains - (5) Linux/Cywgin simulation (arch/sim) + (4) Linux/Cywgin simulation (arch/sim) (4) ARM (arch/arm/) (1) ARM/C5471 (arch/arm/src/c5471/) (3) ARM/DM320 (arch/arm/src/dm320/) @@ -1300,15 +1300,6 @@ o Build system o Linux/Cywgin simulation (arch/sim) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - Title: SIMULATED SERIAL DRIVER - Description: The simulated serial driver has some odd behavior. It - will stall for a long time on reads when the C stdio buffers are - being refilled. This only effects the behavior of things like - fgetc(). Workaround: Set CONFIG_STDIO_BUFFER_SIZE=0, suppressing - all C buffered I/O. - Status: Open - Priority: Low (because the simulator is only a test/development platform) - Title: SIMULATOR NETWORKING SUPPORT Description: I never did get networking to work on the sim Linux target. On Linux, it tries to use the tap device (/dev/net/tun) to emulate an Ethernet diff --git a/nuttx/configs/sim/README.txt b/nuttx/configs/sim/README.txt index d76e0d15d..c0a1eadbe 100644 --- a/nuttx/configs/sim/README.txt +++ b/nuttx/configs/sim/README.txt @@ -12,7 +12,6 @@ Contents - 64-bit Issues - Compiler differences - Stack Size Issues - - Buffered I/O Issues - Networking Issues - X11 Issues o Configurations @@ -152,13 +151,6 @@ steps for increasing the stack size in that case: vi builtin_list.h # Edit this file and increase the stack size of the add-on rm .built *.o # This will force the builtin apps logic to rebuild -Buffered I/O Issues -------------------- -The simulated serial driver has some odd behavior. It will stall for a long time -on reads when the C stdio buffers are being refilled. This only effects the behavior -of things like fgetc(). Workaround: Set CONFIG_STDIO_BUFFER_SIZE=0, suppressing -all C buffered I/O. - Networking Issues ----------------- I never did get networking to work on the sim target. It tries to use the tap device @@ -275,13 +267,13 @@ nettest NOTES: 1. The NuttX network is not, however, functional on the Linux TAP - device yet. + device yet. - UPDATE: The TAP device does apparently work according to a NuttX - user (provided that it is not used with NSH: NSH waits on readline() - for console input. When it calls readline(), the whole system blocks - waiting from input from the host OS). My failure to get the TAP - device working appears to have been a cockpit error. + UPDATE: The TAP device does apparently work according to a NuttX + user (provided that it is not used with NSH: NSH waits on readline() + for console input. When it calls readline(), the whole system blocks + waiting from input from the host OS). My failure to get the TAP + device working appears to have been a cockpit error. 2. As of NuttX-5.18, when built on Windows, this test does not try to use the TAP device (which is not available on Cygwin anyway), @@ -545,6 +537,12 @@ nxwm /* Clean up */ + UPDATE: I recently implemented a good UART simulation to driver + the serial console. So I do not believe that problem exists and + I think that the above workaround should no longer be necessary. + However, I will leave the above text in place until I get then + oppotunity to verify that the new UART simulation fixes the problem. + ostest The "standard" NuttX apps/examples/ostest configuration. |