diff options
Diffstat (limited to 'glcddrivers/usbserlcd.c')
| -rw-r--r-- | glcddrivers/usbserlcd.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/glcddrivers/usbserlcd.c b/glcddrivers/usbserlcd.c index 47d1e7e..44efb31 100644 --- a/glcddrivers/usbserlcd.c +++ b/glcddrivers/usbserlcd.c @@ -12,6 +12,7 @@ #include <syslog.h> #include <cstring> #include <cstdlib> +#include <unistd.h> #include "common.h" #include "config.h" @@ -19,6 +20,8 @@ #include "usbserlcd.h" #include "stdint.h" +const int BAUD_RATE = 150000; +const int BOOT_TIME = 300000; namespace GLCD { @@ -73,13 +76,21 @@ int cDriverUSBserLCD::Init() if (port->Open(config->device.c_str()) != 0) return -1; - port->SetBaudRate(150000); + port->SetBaudRate(BAUD_RATE); *oldConfig = *config; // clear display Clear(); + // Disable the "hangup" signal to prevent Arduino reboots on connect. + // We can't catch the first reboot with this (Hangup flag was set). + // In this case, wait some milliseconds and do a full refresh. + if (port->DisableHangup()) { + usleep(BOOT_TIME); + Refresh(true); + } + syslog(LOG_INFO, "%s: USBserLCD initialized.\n", config->name.c_str()); return 0; } |