Lines Matching +full:0 +full:- +full:dev
2 * Copyright (c) 2006-2018, RT-Thread Development Team
4 * SPDX-License-Identifier: Apache-2.0
8 * 2006-03-13 Bernard first version
9 * 2009-04-20 yi.qiu modified according bernard's stm32 version
21 /* RT-Thread Device Interface */
25 static rt_err_t rt_serial_init(rt_device_t dev) in rt_serial_init() argument
27 struct serial_device* uart = (struct serial_device*) dev->user_data; in rt_serial_init()
29 if (!(dev->flag & RT_DEVICE_FLAG_ACTIVATED)) in rt_serial_init()
32 if (dev->flag & RT_DEVICE_FLAG_INT_RX) in rt_serial_init()
34 rt_memset(uart->int_rx->rx_buffer, 0, in rt_serial_init()
35 sizeof(uart->int_rx->rx_buffer)); in rt_serial_init()
36 uart->int_rx->read_index = uart->int_rx->save_index = 0; in rt_serial_init()
39 if (dev->flag & RT_DEVICE_FLAG_INT_TX) in rt_serial_init()
41 rt_memset(uart->int_tx->tx_buffer, 0, in rt_serial_init()
42 sizeof(uart->int_tx->tx_buffer)); in rt_serial_init()
43 uart->int_tx->write_index = uart->int_tx->save_index = 0; in rt_serial_init()
46 dev->flag |= RT_DEVICE_FLAG_ACTIVATED; in rt_serial_init()
60 uart->int_rx->rx_buffer[uart->int_rx->save_index] = ch; in rt_serial_savechar()
61 uart->int_rx->save_index ++; in rt_serial_savechar()
62 if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE) in rt_serial_savechar()
63 uart->int_rx->save_index = 0; in rt_serial_savechar()
66 if (uart->int_rx->save_index == uart->int_rx->read_index) in rt_serial_savechar()
68 uart->int_rx->read_index ++; in rt_serial_savechar()
69 if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE) in rt_serial_savechar()
70 uart->int_rx->read_index = 0; in rt_serial_savechar()
77 static rt_err_t rt_serial_open(rt_device_t dev, rt_uint16_t oflag) in rt_serial_open() argument
79 RT_ASSERT(dev != RT_NULL); in rt_serial_open()
84 static rt_err_t rt_serial_close(rt_device_t dev) in rt_serial_close() argument
86 RT_ASSERT(dev != RT_NULL); in rt_serial_close()
91 static rt_size_t rt_serial_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) in rt_serial_read() argument
99 uart = (struct serial_device*)dev->user_data; in rt_serial_read()
103 err_code = -RT_ENOMEM; in rt_serial_read()
105 return -RT_ENOMEM; in rt_serial_read()
107 if (dev->flag & RT_DEVICE_FLAG_INT_RX) in rt_serial_read()
114 if (uart->int_rx->read_index != uart->int_rx->save_index) in rt_serial_read()
116 *ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index]; in rt_serial_read()
117 size --; in rt_serial_read()
122 uart->int_rx->read_index ++; in rt_serial_read()
123 if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE) in rt_serial_read()
124 uart->int_rx->read_index = 0; in rt_serial_read()
132 err_code = -RT_EEMPTY; in rt_serial_read()
140 while ((rt_uint32_t)ptr - (rt_uint32_t)buffer < size) in rt_serial_read()
142 while (uart->uart_device->ustat & USTAT_RCV_READY) in rt_serial_read()
144 *ptr = uart->uart_device->urxh & 0xff; in rt_serial_read()
152 return (rt_uint32_t)ptr - (rt_uint32_t)buffer; in rt_serial_read()
155 static rt_size_t rt_serial_write(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size) in rt_serial_write() argument
163 uart = (struct serial_device*)dev->user_data; in rt_serial_write()
167 err_code = -RT_ENOMEM; in rt_serial_write()
169 return -RT_ENOMEM; in rt_serial_write()
171 if (dev->flag & RT_DEVICE_FLAG_INT_TX) in rt_serial_write()
174 while (uart->int_tx->save_index != uart->int_tx->write_index) in rt_serial_write()
177 uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++; in rt_serial_write()
179 -- size; in rt_serial_write()
182 uart->int_tx->save_index ++; in rt_serial_write()
185 if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE) in rt_serial_write()
186 uart->int_tx->save_index = 0; in rt_serial_write()
190 if (size > 0) in rt_serial_write()
191 err_code = -RT_EFULL; in rt_serial_write()
202 if (*ptr == '\n' && (dev->flag & RT_DEVICE_FLAG_STREAM)) in rt_serial_write()
204 while (!(uart->uart_device->ustat & USTAT_TXB_EMPTY)); in rt_serial_write()
205 uart->uart_device->utxh = '\r'; in rt_serial_write()
208 while (!(uart->uart_device->ustat & USTAT_TXB_EMPTY)); in rt_serial_write()
209 uart->uart_device->utxh = (*ptr & 0xFF); in rt_serial_write()
212 --size; in rt_serial_write()
218 return (rt_uint32_t)ptr - (rt_uint32_t)buffer; in rt_serial_write()
221 static rt_err_t rt_serial_control(rt_device_t dev, int cmd, void *args) in rt_serial_control() argument
223 RT_ASSERT(dev != RT_NULL); in rt_serial_control()
229 dev->flag |= RT_DEVICE_FLAG_SUSPENDED; in rt_serial_control()
234 dev->flag &= ~RT_DEVICE_FLAG_SUSPENDED; in rt_serial_control()
248 device->type = RT_Device_Class_Char; in rt_hw_serial_register()
249 device->rx_indicate = RT_NULL; in rt_hw_serial_register()
250 device->tx_complete = RT_NULL; in rt_hw_serial_register()
251 device->init = rt_serial_init; in rt_hw_serial_register()
252 device->open = rt_serial_open; in rt_hw_serial_register()
253 device->close = rt_serial_close; in rt_hw_serial_register()
254 device->read = rt_serial_read; in rt_hw_serial_register()
255 device->write = rt_serial_write; in rt_hw_serial_register()
256 device->control = rt_serial_control; in rt_hw_serial_register()
257 device->user_data = serial; in rt_hw_serial_register()
266 struct serial_device* uart = (struct serial_device*) device->user_data; in rt_hw_serial_isr()
269 RT_ASSERT(device->flag & RT_DEVICE_FLAG_INT_RX); in rt_hw_serial_isr()
272 while (uart->uart_device->ustat & USTAT_RCV_READY) in rt_hw_serial_isr()
274 rt_serial_savechar(uart, uart->uart_device->urxh & 0xff); in rt_hw_serial_isr()
278 if (device->rx_indicate != RT_NULL) in rt_hw_serial_isr()
283 rx_length = uart->int_rx->read_index > uart->int_rx->save_index ? in rt_hw_serial_isr()
284 UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index : in rt_hw_serial_isr()
285 uart->int_rx->save_index - uart->int_rx->read_index; in rt_hw_serial_isr()
287 device->rx_indicate(device, rx_length); in rt_hw_serial_isr()