* RX filter: 93.75 kHz
*/
-/*
- * For 434.550MHz, the frequency value is:
- *
- * 434.550e6 / (24e6 / 2**16) = 1186611.2
- */
-
-#define FREQ_CONTROL 1186611
-
/*
* For IF freq of 140.62kHz, the IF value is:
*
RF_PA_TABLE1_OFF, RF_POWER,
RF_PA_TABLE0_OFF, RF_POWER,
- RF_FREQ2_OFF, (FREQ_CONTROL >> 16) & 0xff,
- RF_FREQ1_OFF, (FREQ_CONTROL >> 8) & 0xff,
- RF_FREQ0_OFF, (FREQ_CONTROL >> 0) & 0xff,
-
RF_FSCTRL1_OFF, (IF_FREQ_CONTROL << RF_FSCTRL1_FREQ_IF_SHIFT),
RF_FSCTRL0_OFF, (0 << RF_FSCTRL0_FREQOFF_SHIFT),
RF_SYNC0_OFF, 0x91,
/* max packet length */
- RF_PKTLEN_OFF, sizeof (struct ao_telemetry),
-
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
PKTCTRL1_APPEND_STATUS|
PKTCTRL1_ADR_CHK_NONE),
RF_DEVIATN_OFF, ((RDF_DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
(RDF_DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
- /* packet length */
- RF_PKTLEN_OFF, RDF_PACKET_LEN,
+ /* packet length is set in-line */
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
PKTCTRL1_ADR_CHK_NONE),
RF_PKTCTRL0_OFF, (RF_PKTCTRL0_PKT_FORMAT_NORMAL|
RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
};
-static __code uint8_t telemetry_setup[] = {
+static __code uint8_t fixed_pkt_setup[] = {
RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
(CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
(DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
(DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
- /* max packet length */
- RF_PKTLEN_OFF, sizeof (struct ao_telemetry),
+ /* max packet length -- now set inline */
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
PKTCTRL1_APPEND_STATUS|
PKTCTRL1_ADR_CHK_NONE),
__xdata uint8_t ao_radio_dma;
__xdata uint8_t ao_radio_dma_done;
+__xdata uint8_t ao_radio_done;
+__xdata uint8_t ao_radio_abort;
__xdata uint8_t ao_radio_mutex;
-static void
+void
+ao_radio_general_isr(void) __interrupt 16
+{
+ S1CON &= ~0x03;
+ if (RFIF & RFIF_IM_TIMEOUT) {
+ ao_radio_recv_abort();
+ RFIF &= ~ RFIF_IM_TIMEOUT;
+ } else if (RFIF & RFIF_IM_DONE) {
+ ao_radio_done = 1;
+ ao_wakeup(&ao_radio_done);
+ RFIF &= ~RFIF_IM_DONE;
+ }
+}
+
+void
+ao_radio_set_packet(void)
+{
+ uint8_t i;
+ for (i = 0; i < sizeof (fixed_pkt_setup); i += 2)
+ RF[fixed_pkt_setup[i]] = fixed_pkt_setup[i+1];
+}
+
+void
ao_radio_idle(void)
{
if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
{
- RFST = RFST_SIDLE;
do {
+ RFST = RFST_SIDLE;
ao_yield();
} while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
}
}
void
-ao_radio_send(__xdata struct ao_telemetry *telemetry) __reentrant
+ao_radio_get(uint8_t len)
{
ao_config_get();
ao_mutex_get(&ao_radio_mutex);
ao_radio_idle();
RF_CHANNR = ao_config.radio_channel;
+ RF_FREQ2 = (uint8_t) (ao_config.radio_setting >> 16);
+ RF_FREQ1 = (uint8_t) (ao_config.radio_setting >> 8);
+ RF_FREQ0 = (uint8_t) (ao_config.radio_setting);
+ RF_PKTLEN = len;
+}
+
+
+void
+ao_radio_send(__xdata void *packet, uint8_t size) __reentrant
+{
+ ao_radio_get(size);
+ ao_radio_done = 0;
ao_dma_set_transfer(ao_radio_dma,
- telemetry,
+ packet,
&RFDXADDR,
- sizeof (struct ao_telemetry),
+ size,
DMA_CFG0_WORDSIZE_8 |
DMA_CFG0_TMODE_SINGLE |
DMA_CFG0_TRIGGER_RADIO,
DMA_CFG1_PRIORITY_HIGH);
ao_dma_start(ao_radio_dma);
RFST = RFST_STX;
- __critical while (!ao_radio_dma_done)
- ao_sleep(&ao_radio_dma_done);
- ao_mutex_put(&ao_radio_mutex);
+ __critical while (!ao_radio_done)
+ ao_sleep(&ao_radio_done);
+ ao_radio_put();
}
-void
-ao_radio_recv(__xdata struct ao_radio_recv *radio) __reentrant
+uint8_t
+ao_radio_recv(__xdata void *packet, uint8_t size) __reentrant
{
- ao_config_get();
- ao_mutex_get(&ao_radio_mutex);
- ao_radio_idle();
- RF_CHANNR = ao_config.radio_channel;
+ ao_radio_abort = 0;
+ ao_radio_get(size - 2);
ao_dma_set_transfer(ao_radio_dma,
&RFDXADDR,
- radio,
- sizeof (struct ao_radio_recv),
+ packet,
+ size,
DMA_CFG0_WORDSIZE_8 |
DMA_CFG0_TMODE_SINGLE |
DMA_CFG0_TRIGGER_RADIO,
DMA_CFG1_PRIORITY_HIGH);
ao_dma_start(ao_radio_dma);
RFST = RFST_SRX;
- __critical while (!ao_radio_dma_done)
- ao_sleep(&ao_radio_dma_done);
- ao_mutex_put(&ao_radio_mutex);
+
+ /* Wait for DMA to be done, for the radio receive process to
+ * get aborted or for a receive timeout to fire
+ */
+ __critical while (!ao_radio_dma_done && !ao_radio_abort)
+ if (ao_sleep(&ao_radio_dma_done))
+ break;
+
+ /* If recv was aborted, clean up by stopping the DMA engine
+ * and idling the radio
+ */
+ if (!ao_radio_dma_done) {
+ ao_dma_abort(ao_radio_dma);
+ ao_radio_idle();
+ }
+ ao_radio_put();
+ return ao_radio_dma_done;
+}
+
+/*
+ * Wake up a task waiting to receive a radio packet
+ * and tell them to abort the transfer
+ */
+
+void
+ao_radio_recv_abort(void)
+{
+ ao_radio_abort = 1;
+ ao_wakeup(&ao_radio_dma_done);
}
-__xdata ao_radio_rdf_running;
__xdata ao_radio_rdf_value = 0x55;
void
-ao_radio_rdf(void)
+ao_radio_rdf(int ms)
{
uint8_t i;
- ao_mutex_get(&ao_radio_mutex);
- ao_radio_idle();
- ao_radio_rdf_running = 1;
+ uint8_t pkt_len;
+
+ /*
+ * Compute the packet length as follows:
+ *
+ * 2000 bps (for a 1kHz tone)
+ * so, for 'ms' milliseconds, we need
+ * 2 * ms bits, or ms / 4 bytes
+ */
+ if (ms > (255 * 4))
+ ms = 255 * 4;
+ pkt_len = ms >> 2;
+
+ ao_radio_abort = 0;
+ ao_radio_get(pkt_len);
+ ao_radio_done = 0;
for (i = 0; i < sizeof (rdf_setup); i += 2)
RF[rdf_setup[i]] = rdf_setup[i+1];
ao_dma_set_transfer(ao_radio_dma,
&ao_radio_rdf_value,
&RFDXADDR,
- RDF_PACKET_LEN,
+ pkt_len,
DMA_CFG0_WORDSIZE_8 |
DMA_CFG0_TMODE_SINGLE |
DMA_CFG0_TRIGGER_RADIO,
DMA_CFG1_PRIORITY_HIGH);
ao_dma_start(ao_radio_dma);
RFST = RFST_STX;
-
- __critical while (!ao_radio_dma_done)
- ao_sleep(&ao_radio_dma_done);
- ao_radio_rdf_running = 0;
- ao_radio_idle();
- for (i = 0; i < sizeof (rdf_setup); i += 2)
- RF[telemetry_setup[i]] = telemetry_setup[i+1];
- ao_mutex_put(&ao_radio_mutex);
+ __critical while (!ao_radio_done && !ao_radio_abort)
+ ao_sleep(&ao_radio_done);
+ if (!ao_radio_done) {
+ ao_dma_abort(ao_radio_dma);
+ ao_radio_idle();
+ }
+ ao_radio_set_packet();
+ ao_radio_put();
}
void
ao_radio_rdf_abort(void)
{
- if (ao_radio_rdf_running) {
- ao_dma_abort(ao_radio_dma);
+ ao_radio_abort = 1;
+ ao_wakeup(&ao_radio_done);
+}
+
+
+/* Output carrier */
+void
+ao_radio_test(void)
+{
+ uint8_t mode = 2;
+ static __xdata radio_on;
+ ao_cmd_white();
+ if (ao_cmd_lex_c != '\n') {
+ ao_cmd_decimal();
+ mode = (uint8_t) ao_cmd_lex_u32;
+ }
+ mode++;
+ if ((mode & 2) && !radio_on) {
+#if HAS_MONITOR
+ ao_set_monitor(0);
+#endif
+#if PACKET_HAS_SLAVE
+ ao_packet_slave_stop();
+#endif
+ ao_radio_get(0xff);
+ RFST = RFST_STX;
+ radio_on = 1;
+ }
+ if (mode == 3) {
+ printf ("Hit a character to stop..."); flush();
+ getchar();
+ putchar('\n');
+ }
+ if ((mode & 1) && radio_on) {
ao_radio_idle();
+ ao_radio_put();
+ radio_on = 0;
}
}
+__code struct ao_cmds ao_radio_cmds[] = {
+ { ao_radio_test, "C <1 start, 0 stop, none both>\0Radio carrier test" },
+ { 0, NULL },
+};
+
void
ao_radio_init(void)
{
uint8_t i;
for (i = 0; i < sizeof (radio_setup); i += 2)
RF[radio_setup[i]] = radio_setup[i+1];
+ ao_radio_set_packet();
ao_radio_dma_done = 1;
ao_radio_dma = ao_dma_alloc(&ao_radio_dma_done);
+ RFIF = 0;
+ RFIM = RFIM_IM_TIMEOUT|RFIM_IM_DONE;
+ IEN2 |= IEN2_RFIE;
+ ao_cmd_register(&ao_radio_cmds[0]);
}
projects / fw / altos / blobdiff