gsi_channel_command
gsi_channel_command(channel, GSI_CH_ALLOCATE);
gsi_channel_command(channel, GSI_CH_START);
gsi_channel_command(channel, GSI_CH_STOP);
gsi_channel_command(channel, GSI_CH_RESET);
gsi_channel_command(channel, GSI_CH_DE_ALLOC);