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SH7263/SH7203 Group
Data Transfer to On-chip Peripheral Modules with DMAC
REJ06B0734-0100/Rev.1.00 April 2008 Page 14 of 17
6. Sample Program Listing "main.c" (7)
272 * Function : Initializes SCIF0
273 * : Asynchronous (UART)/ 8 bits/ No parity/ 1 stop bit/ RTS/CTS disabled
274 * : Baud rate is specified by argument bps
275 * :
276 *-----------------------------------------------------------------------
277 * Argument : int bps : Value for baud rate specification
278 *-----------------------------------------------------------------------
279 * Return Value: void
280 *-----------------------------------------------------------------------
281 * Notice : The baud rate setting values given in this program are those when
282 * : the peripheral module clock (Pf) frequency is 33 MHz. If a different
283 * : clock is used, the baud rate setting values must be changed.
284 *""FUNC COMMENT END""***************************************************/
285 void io_init_scif0(int bps)
286 {
287 /* ====Power-down mode cancellation==== */
288 /* ----Setting standby control register 4 (STBCR4)---- */
289 CPG.STBCR4.BIT.MSTP47 = 0; /* Start clock supply to SCIF0 */
290
291 /* ====SCIF0 initialization==== */
292 /* ----Setting serial control register (SCSCRi)---- */
293 SCIF0.SCSCR.WORD = 0x0000; /* Stop transmission/reception by SCIF0 */
294
295 /* ----Setting FIFO control register (SCFCRi)---- */
296 SCIF0.SCFCR.BIT.TFRST = 1; /* Reset transmit FIFO */
297
298 /* ----Setting serial control register (SCSCRi)---- */
299 SCIF0.SCSCR.BIT.CKE = 0x0; /* B'00: Internal clock */
300
301 /* ----Setting serial mode register (SCSMRi)---- */
302 SCIF0.SCSMR.WORD = scif_baud[bps].scsmr;
303 /* Communication mode 0: Asynchronous mode */
304 /* Character length 0: 8-bit data */
305 /* Parity enable 0: Disable addition and check */
306 /* Parity mode 0: Even parity */
307 /* Stop bit length 0: 1 stop bit */
308 /* Clock select : Table value */
309
310 /* ----Setting bit rate register (SCBRRi)---- */
311 SCIF0.SCBRR.BYTE = scif_baud[bps].scbrr;
312
313 /* ----Setting FIFO control register (SCFCRi)---- */
314 SCIF0.SCFCR.WORD = 0x0030; /* Transmit FIFO data count trigger
315 : Number of data bytes = 0 */
316 /* Modem control enable : Disabled */
317 /* Transmit FIFO data register reset : Disabled */
318 /* Loopback test : Disabled */
319
319 /* ====Setting pin function controller (PFC)==== */
320 PORT.PECRL1.BIT.PE1MD = 0x3; /* Switch to TxD0 pin */
321
322 /* ----Setting serial control register (SCSCRi) ---- */
323 SCIF0.SCSCR.BIT.TIE = 1; /* Enable SCIF0 transmit interrupt */
324 SCIF0.SCSCR.BIT.TE = 1; /* Enable SCIF0 transmission */
325
326 }
327 /* End of File */