ARM9教程DSP教程FPGA教程CPLD教程12A软硬件设计0229(19)

ARM9教程DSP教程FPGA教程CPLD教程12A软硬件设计0229

else {

UART_SBUF(base) = transmit_buffer->buffer[transmit_buffer->tail++];

if ( transmit_buffer->tail == transmit_buffer->buffer_size ) transmit_buffer->tail = 0; transmit_buffer->busy = 1; } } }