32 	struct serial_device* uart = (struct serial_device*) dev->user_data;  in rt_serial_init()  local
39 			rt_memset(uart->int_rx->rx_buffer, 0,   in rt_serial_init()
40 				sizeof(uart->int_rx->rx_buffer));  in rt_serial_init()
41 			uart->int_rx->read_index = uart->int_rx->save_index = 0;  in rt_serial_init()
46 			rt_memset(uart->int_tx->tx_buffer, 0,   in rt_serial_init()
47 				sizeof(uart->int_tx->tx_buffer));  in rt_serial_init()
48 			uart->int_tx->write_index = uart->int_tx->save_index = 0;  in rt_serial_init()
58 static void rt_serial_savechar(struct serial_device* uart, char ch)  in rt_serial_savechar()  argument
65 	uart->int_rx->rx_buffer[uart->int_rx->save_index] = ch;  in rt_serial_savechar()
66 	uart->int_rx->save_index ++;  in rt_serial_savechar()
67 	if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE)  in rt_serial_savechar()
68 		uart->int_rx->save_index = 0;  in rt_serial_savechar()
71 	if (uart->int_rx->save_index == uart->int_rx->read_index)  in rt_serial_savechar()
73 		uart->int_rx->read_index ++;  in rt_serial_savechar()
74 		if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)  in rt_serial_savechar()
75 			uart->int_rx->read_index = 0;  in rt_serial_savechar()
100 	struct serial_device* uart;  in rt_serial_read()  local
104 	uart = (struct serial_device*)dev->user_data;  in rt_serial_read()
113 			if (uart->int_rx->read_index != uart->int_rx->save_index)  in rt_serial_read()
115 				*ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index];  in rt_serial_read()
121 				uart->int_rx->read_index ++;  in rt_serial_read()
122 				if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)  in rt_serial_read()
123 					uart->int_rx->read_index = 0;  in rt_serial_read()
141 			//while (uart->uart_device->ustat & USTAT_RCV_READY)  in rt_serial_read()
143 				*ptr = uart->uart_device->rbr_thr & 0xff;  in rt_serial_read()
158 	struct serial_device* uart;  in rt_serial_write()  local
162 	uart = (struct serial_device*)dev->user_data;  in rt_serial_write()
167 		while (uart->int_tx->save_index != uart->int_tx->write_index)  in rt_serial_write()
170 			uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++;  in rt_serial_write()
175 			uart->int_tx->save_index ++;  in rt_serial_write()
178 			if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE)  in rt_serial_write()
179 				uart->int_tx->save_index = 0;  in rt_serial_write()
197 				while (!(uart->uart_device->lsr & 0x20));  in rt_serial_write()
198 				uart->uart_device->rbr_thr = '\r';  in rt_serial_write()
201 			while (!(uart->uart_device->lsr & 0x20));  in rt_serial_write()
202 			uart->uart_device->rbr_thr = (*ptr & 0xFF);  in rt_serial_write()
259 	struct serial_device* uart = (struct serial_device*) device->user_data;  in rt_hw_serial_isr()  local
265 	//while (uart->uart_device->ustat & USTAT_RCV_READY)  in rt_hw_serial_isr()
267 		rt_serial_savechar(uart, uart->uart_device->rbr_thr & 0xff);  in rt_hw_serial_isr()
276 		rx_length = uart->int_rx->read_index > uart->int_rx->save_index ?  in rt_hw_serial_isr()
277 			UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index :  in rt_hw_serial_isr()
278 			uart->int_rx->save_index - uart->int_rx->read_index;  in rt_hw_serial_isr()