Mercurial > ecos

comparison packages/io/serial/current/src/arm/aeb_serial.c @ 66:bf00f99aec69 ecos-sw-2000-02-02

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
parents c38311975d4f
children
comparison
equal deleted inserted replaced
65:b4822dd69c33 66:bf00f99aec69
7 //========================================================================== 7 //==========================================================================
8 //####COPYRIGHTBEGIN#### 8 //####COPYRIGHTBEGIN####
9 // 9 //
10 // ------------------------------------------- 10 // -------------------------------------------
11 // The contents of this file are subject to the Red Hat eCos Public License 11 // The contents of this file are subject to the Red Hat eCos Public License
12 // Version 1.0 (the "License"); you may not use this file except in 12 // Version 1.1 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at 13 // compliance with the License. You may obtain a copy of the License at
14 // http://sourceware.cygnus.com/ecos 14 // http://www.redhat.com/
15 // 15 //
16 // Software distributed under the License is distributed on an 16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under 18 // License for the specific language governing rights and limitations under
19 // the License. 19 // the License.
20 // 20 //
21 // The Original Code is eCos - Embedded Configurable Operating System, 21 // The Original Code is eCos - Embedded Configurable Operating System,
169 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 169 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
170 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 170 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
171 unsigned short baud_divisor = select_baud[new_config->baud]; 171 unsigned short baud_divisor = select_baud[new_config->baud];
172 unsigned char _lcr, _ier; 172 unsigned char _lcr, _ier;
173 if (baud_divisor == 0) return false; 173 if (baud_divisor == 0) return false;
174 _ier = port->ier; 174 _ier = port->REG_IER;
175 port->ier = 0; // Disable port interrupts while changing hardware 175 port->REG_IER = 0; // Disable port interrupts while changing hardware
176 _lcr = select_word_length[new_config->word_length - CYGNUM_SERIAL_WORD_LENGTH_5] | 176 _lcr = select_word_length[new_config->word_length - CYGNUM_SERIAL_WORD_LENGTH_5] |
177 select_stop_bits[new_config->stop] | 177 select_stop_bits[new_config->stop] |
178 select_parity[new_config->parity]; 178 select_parity[new_config->parity];
179 port->lcr = _lcr; 179 port->REG_LCR = _lcr;
180 port->lcr |= LCR_DL; 180 port->REG_LCR |= LCR_DL;
181 port->mdl = baud_divisor >> 8; 181 port->REG_MDL = baud_divisor >> 8;
182 port->ldl = baud_divisor & 0xFF; 182 port->REG_LDL = baud_divisor & 0xFF;
183 port->lcr &= ~LCR_DL; 183 port->REG_LCR &= ~LCR_DL;
184 if (init) { 184 if (init) {
185 port->fcr = 0x07; // Enable and clear FIFO 185 port->REG_FCR = 0x07; // Enable and clear FIFO
186 if (chan->out_cbuf.len != 0) { 186 if (chan->out_cbuf.len != 0) {
187 port->ier = IER_RCV; 187 port->REG_IER = IER_RCV;
188 } else { 188 } else {
189 port->ier = 0; 189 port->REG_IER = 0;
190 } 190 }
191 port->mcr = MCR_INT|MCR_DTR|MCR_RTS; // Master interrupt enable 191 port->REG_MCR = MCR_INT|MCR_DTR|MCR_RTS; // Master interrupt enable
192 } else { 192 } else {
193 port->ier = _ier; 193 port->REG_IER = _ier;
194 } 194 }
195 if (new_config != &chan->config) { 195 if (new_config != &chan->config) {
196 chan->config = *new_config; 196 chan->config = *new_config;
197 } 197 }
198 return true; 198 return true;
239 static bool 239 static bool
240 aeb_serial_putc(serial_channel *chan, unsigned char c) 240 aeb_serial_putc(serial_channel *chan, unsigned char c)
241 { 241 {
242 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 242 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
243 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 243 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
244 if (port->lsr & LSR_THE) { 244 if (port->REG_LSR & LSR_THE) {
245 // Transmit buffer is empty 245 // Transmit buffer is empty
246 port->thr = c; 246 port->REG_THR = c;
247 return true; 247 return true;
248 } else { 248 } else {
249 // No space 249 // No space
250 return false; 250 return false;
251 } 251 }
256 aeb_serial_getc(serial_channel *chan) 256 aeb_serial_getc(serial_channel *chan)
257 { 257 {
258 unsigned char c; 258 unsigned char c;
259 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 259 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
260 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 260 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
261 while ((port->lsr & LSR_RSR) == 0) ; // Wait for char 261 while ((port->REG_LSR & LSR_RSR) == 0) ; // Wait for char
262 c = port->rhr; 262 c = port->REG_RHR;
263 return c; 263 return c;
264 } 264 }
265 265
266 // Set up the device characteristics; baud rate, etc. 266 // Set up the device characteristics; baud rate, etc.
267 static bool 267 static bool
274 static void 274 static void
275 aeb_serial_start_xmit(serial_channel *chan) 275 aeb_serial_start_xmit(serial_channel *chan)
276 { 276 {
277 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 277 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
278 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 278 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
279 port->ier |= IER_XMT; // Enable xmit interrupt 279 port->REG_IER |= IER_XMT; // Enable xmit interrupt
280 } 280 }
281 281
282 // Disable the transmitter on the device 282 // Disable the transmitter on the device
283 static void 283 static void
284 aeb_serial_stop_xmit(serial_channel *chan) 284 aeb_serial_stop_xmit(serial_channel *chan)
285 { 285 {
286 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 286 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
287 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 287 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
288 port->ier &= ~IER_XMT; // Disable xmit interrupt 288 port->REG_IER &= ~IER_XMT; // Disable xmit interrupt
289 } 289 }
290 290
291 // Serial I/O - low level interrupt handler (ISR) 291 // Serial I/O - low level interrupt handler (ISR)
292 static cyg_uint32 292 static cyg_uint32
293 aeb_serial_ISR(cyg_vector_t vector, cyg_addrword_t data) 293 aeb_serial_ISR(cyg_vector_t vector, cyg_addrword_t data)
305 { 305 {
306 serial_channel *chan = (serial_channel *)data; 306 serial_channel *chan = (serial_channel *)data;
307 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv; 307 aeb_serial_info *aeb_chan = (aeb_serial_info *)chan->dev_priv;
308 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base; 308 volatile struct serial_port *port = (volatile struct serial_port *)aeb_chan->base;
309 unsigned char isr; 309 unsigned char isr;
310 isr = port->isr & 0x0E; 310 isr = port->REG_ISR & 0x0E;
311 if (isr == ISR_Tx) { 311 if (isr == ISR_Tx) {
312 (chan->callbacks->xmt_char)(chan); 312 (chan->callbacks->xmt_char)(chan);
313 } else if (isr == ISR_Rx) { 313 } else if (isr == ISR_Rx) {
314 (chan->callbacks->rcv_char)(chan, port->rhr); 314 (chan->callbacks->rcv_char)(chan, port->REG_RHR);
315 } 315 }
316 cyg_drv_interrupt_unmask(aeb_chan->int_num); 316 cyg_drv_interrupt_unmask(aeb_chan->int_num);
317 } 317 }
318 #endif 318 #endif