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annotate gsm-fw/L1/cfile/tch_feature.c @ 1007:3bfeee466b0a

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gsm-fw feature tch-reroute: downlink sending implemented
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 20 Mar 2016 19:31:39 +0000
parents 908566db1538
children a6ca9ee289f7
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1003
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1 /*
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2 * This module is a FreeCalypso addition; it contains code implementing
9b147d0b2cab gsm-fw feature tch-reroute: started laying the foundation
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3 * our custom voice TCH rerouting feature.
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4 */
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5
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6 #include "config.h"
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7 #include "l1_confg.h"
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8 #include "l1_types.h"
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9 #include "sys_types.h"
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10 #include "l1_trace.h"
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11 #include "tch_feature.h"
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12
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13 T_RVT_USER_ID tch_reroute_rvt_id;
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14 BOOL tch_reroute_downlink;
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15
1007
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16 void tch_send_downlink_bits(API *dsp_buffer)
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17 {
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18 T_RVT_BUFFER buf;
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19 T_RVT_RET rc;
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20 UINT8 *dp;
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21 API apiword;
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22 int i;
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23
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24 rc = rvt_mem_alloc(tch_reroute_rvt_id, 41, &buf);
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25 if (rc != RVT_OK)
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26 return;
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27 dp = buf;
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28 *dp++ = TCH_DLBITS_IND;
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29 for (i = 0; i < 20; i++) {
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30 apiword = dsp_buffer[i];
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31 *dp++ = apiword;
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32 *dp++ = apiword >> 8;
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33 }
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34 rvt_send_trace_no_cpy(buf, tch_reroute_rvt_id, 41, RVT_BINARY_FORMAT);
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35 }
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36
1005
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37 static void handle_tch_config_reg(T_RVT_BUFFER pkt)
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38 {
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39 UWORD8 config;
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40 T_RVT_BUFFER buf;
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41 T_RVT_RET rc;
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42
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43 config = pkt[1] & 0x01;
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44 tch_reroute_downlink = config;
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45
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46 /* send TCH_CONFIG_CONF response */
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47 rc = rvt_mem_alloc(tch_reroute_rvt_id, 2, &buf);
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48 if (rc == RVT_OK) {
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49 buf[0] = TCH_CONFIG_CONF;
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50 buf[1] = config;
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51 rvt_send_trace_no_cpy(buf, tch_reroute_rvt_id, 2,
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52 RVT_BINARY_FORMAT);
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53 }
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54 }
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55
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56 /*
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57 * The following function is the callback registered with RVT; it gets
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58 * called in RVT HISR context.
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59 */
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60 static void tch_rvt_input_callback(T_RVT_BUFFER pkt, UINT16 pktlen)
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61 {
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62 if (pktlen < 1)
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63 return;
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64 switch (pkt[0]) {
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65 case TCH_CONFIG_REQ:
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66 if (pktlen != 2)
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67 return;
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68 handle_tch_config_reg(pkt);
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69 break;
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70 case TCH_ULBITS_REQ:
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71 /* to be filled */
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72 break;
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73 }
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74 }
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75
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76 void feature_tch_reroute_init()
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77 {
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78 rvt_register_id("TCH", &tch_reroute_rvt_id, tch_rvt_input_callback);
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79 tch_reroute_downlink = FALSE;
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80 }