gonzui

tkernel_2

driver/tef_em1d/clk/src/em1d512_iic.c - 8.8KB - 338 lines

114:         /* generate start condition */
115:         out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) & ~IICC_ACKE);
116:         out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) |  IICC_STT);
117: 
151:         /* generate stop condition */
152:         out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) | IICC_SPT);
153: 
197:         if (cmd & IIC_TOPDATA) {
198:                 out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) & ~IICC_WTIM);
199:                 out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) |  IICC_ACKE);
200:         }
202:         /* initiate data receive */
203:         out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) | IICC_WREL);
204:         er = wait_int();
215:         if ((cmd & IIC_LASTDATA) || er < E_OK) {
216:                 out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) |  IICC_WTIM);
217:                 out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) & ~IICC_ACKE);
218:                 out_w(IIC_IICC(ch), in_w(IIC_IICC(ch)) | IICC_WREL);
219:                 wait_int();
239:         /* initialization */
240:         out_w(IIC_IICC(ch), 0);                                // halt entire operation
241:         out_w(IIC_IICCL(ch), IICCL_SMC | IICCL_DFC);   // high-speed mode + filter
242:         out_w(IIC_IICF(ch), IICF_STCEN | IICF_IICRSV); // force transmission
243:         out_w(IIC_IICC(ch), IICC_IICE | IICC_WTIM);    // IIC operation, 9 bits mode
244:         tk_can_wup(TSK_SELF);
278: fin1:
279:         out_w(IIC_IICC(ch), 0);        // halt entire operation
280:         Unlock(&IICLock[ch]);