altos: Software implemenation of CC1111 radio encoding

[fw/altos] / src / drivers / ao_cc1120.c

diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c
index f06d52ca162e761acc7aefef0d4086d58727587e..231d14d4357e9e803871dbc00a419a5a7722c6d8 100644 (file)
--- a/src/drivers/ao_cc1120.c
+++ b/src/drivers/ao_cc1120.c
@@ -18,6 +18,7 @@
 #include <ao.h>
 #include <ao_cc1120.h>
 #include <ao_exti.h>
+#include <ao_fec.h>
 
 uint8_t ao_radio_wake;
 uint8_t ao_radio_mutex;
@@ -240,26 +241,27 @@ ao_radio_rx_done(void)
        return ao_radio_marc_status() == CC1120_MARC_STATUS1_RX_FINISHED;
 }
 
+static void
+ao_radio_start_tx(void)
+{
+       ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG);
+       ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
+       ao_radio_strobe(CC1120_STX);
+}
+
 void
 ao_radio_rdf(uint8_t len)
 {
        int i;
 
        ao_radio_get(len);
-       ao_radio_abort = 0;
        ao_radio_wake = 0;
        for (i = 0; i < sizeof (rdf_setup) / sizeof (rdf_setup[0]); i += 2)
                ao_radio_reg_write(rdf_setup[i], rdf_setup[i+1]);
 
-       ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG);
-
        ao_radio_fifo_write_fixed(ao_radio_rdf_value, len);
 
-       ao_radio_reg_write(CC1120_PKT_LEN, len);
-
-       ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
-
-       ao_radio_strobe(CC1120_STX);
+       ao_radio_start_tx();
 
        cli();
        while (!ao_radio_wake && !ao_radio_abort)
@@ -327,24 +329,45 @@ ao_radio_test(void)
 void
 ao_radio_send(void *d, uint8_t size)
 {
-       uint8_t marc_status;
-
+       uint8_t         marc_status;
+       static uint8_t  prepare[128];
+       uint8_t         prepare_len;
+       static uint8_t  encode[256];
+       uint8_t         encode_len;
+       static uint8_t  interleave[256];
+       uint8_t         interleave_len;
+
+       ao_fec_dump_bytes(d, size, "Input");
+
+#if 1
+       prepare_len = ao_fec_prepare(d, size, prepare);
+       ao_fec_dump_bytes(prepare, prepare_len, "Prepare");
+
+       ao_fec_whiten(prepare, prepare_len, prepare);
+       ao_fec_dump_bytes(prepare, prepare_len, "Whiten");
+
+       encode_len = ao_fec_encode(prepare, prepare_len, encode);
+       ao_fec_dump_bytes(encode, encode_len, "Encode");
+
+       interleave_len = ao_fec_interleave(encode, encode_len, interleave);
+       ao_fec_dump_bytes(interleave, interleave_len, "Interleave");
+       ao_radio_get(interleave_len);
+       ao_radio_fifo_write(interleave, interleave_len);
+#else
        ao_radio_get(size);
-       ao_radio_wake = 0;
        ao_radio_fifo_write(d, size);
-       ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
-       ao_radio_strobe(CC1120_STX);
+#endif
+
+       ao_radio_wake = 0;
+
+       ao_radio_start_tx();
+
        cli();
-       for (;;) {
-               if (ao_radio_wake) {
-                       marc_status = ao_radio_marc_status();
-                       if (marc_status != CC1120_MARC_STATUS1_NO_FAILURE)
-                               break;
-                       ao_radio_wake = 0;
-               }
+       while (!ao_radio_wake && !ao_radio_abort)
                ao_sleep(&ao_radio_wake);
-       }
        sei();
+       if (!ao_radio_tx_done())
+               ao_radio_idle();
        ao_radio_put();
 }
 
@@ -361,6 +384,7 @@ ao_radio_recv(__xdata void *d, uint8_t size)
        cli();
        for (;;) {
                if (ao_radio_abort)
+
                        break;
                if (ao_radio_wake) {
                        marc_status = ao_radio_marc_status();
@@ -413,7 +437,7 @@ static const uint16_t packet_setup[] = {
        CC1120_DRATE0,          ((PACKET_DRATE_M >> 0) & 0xff),
        CC1120_PKT_CFG2,        ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) |
                                 (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)),
-       CC1120_PKT_CFG1,        ((1 << CC1120_PKT_CFG1_WHITE_DATA) |
+       CC1120_PKT_CFG1,        ((0 << CC1120_PKT_CFG1_WHITE_DATA) |
                                 (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) |
                                 (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) |
                                 (1 << CC1120_PKT_CFG1_APPEND_STATUS)),
@@ -469,9 +493,6 @@ ao_radio_setup(void)
        for (i = 0; i < sizeof (radio_setup) / sizeof (radio_setup[0]); i += 2)
                ao_radio_reg_write(radio_setup[i], radio_setup[i+1]);
 
-       /* Enable marc status interrupt on gpio 2 pin */
-       ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_MARC_MCU_WAKEUP);
-
        ao_radio_set_packet();
 
        ao_config_get();
@@ -707,6 +728,21 @@ static void ao_radio_beep(void) {
        ao_radio_rdf(RDF_PACKET_LEN);
 }
 
+static void ao_radio_packet(void) {
+       static uint8_t packet[] = {
+#if 1
+               0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+               0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+               0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+               0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+#else
+               3, 1, 2, 3
+#endif
+       };
+
+       ao_radio_send(packet, sizeof (packet));
+}
+
 #endif
 
 static const struct ao_cmds ao_radio_cmds[] = {
@@ -714,6 +750,7 @@ static const struct ao_cmds ao_radio_cmds[] = {
 #if CC1120_DEBUG
        { ao_radio_show,        "R\0Show CC1120 status" },
        { ao_radio_beep,        "b\0Emit an RDF beacon" },
+       { ao_radio_packet,      "p\0Send a test packet" },
 #endif
        { 0, NULL }
 };