*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#define ao_radio_try_select(task_id) ao_spi_try_get_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS,AO_SPI_SPEED_4MHz, task_id)
#define ao_radio_select() ao_spi_get_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS,AO_SPI_SPEED_4MHz)
#define ao_radio_deselect() ao_spi_put_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS)
-#define ao_radio_spi_send_sync(d,l) ao_spi_send_sync((d), (l), AO_CC1120_SPI_BUS)
+#define ao_radio_spi_start_bytes() ao_spi_start_bytes(AO_CC1120_SPI_BUS)
+#define ao_radio_spi_stop_bytes() ao_spi_stop_bytes(AO_CC1120_SPI_BUS)
+#define ao_radio_spi_send_byte(b) ao_spi_send_byte(b, AO_CC1120_SPI_BUS)
+#define ao_radio_spi_recv_byte() ao_spi_recv_byte(AO_CC1120_SPI_BUS)
#define ao_radio_spi_send(d,l) ao_spi_send((d), (l), AO_CC1120_SPI_BUS)
#define ao_radio_spi_send_fixed(d,l) ao_spi_send_fixed((d), (l), AO_CC1120_SPI_BUS)
#define ao_radio_spi_recv(d,l) ao_spi_recv((d), (l), AO_CC1120_SPI_BUS)
static void
_ao_radio_burst_read_start (uint16_t addr)
{
- uint8_t data[2];
- uint8_t d;
+ ao_radio_spi_start_bytes();
if (CC1120_IS_EXTENDED(addr)) {
- data[0] = ((1 << CC1120_READ) |
- (1 << CC1120_BURST) |
- CC1120_EXTENDED);
- data[1] = addr;
- d = 2;
+ ao_radio_spi_send_byte((1 << CC1120_READ) |
+ (1 << CC1120_BURST) |
+ CC1120_EXTENDED);
} else {
- data[0] = ((1 << CC1120_READ) |
- (1 << CC1120_BURST) |
- addr);
- d = 1;
+ addr |= ((1 << CC1120_READ) |
+ (1 << CC1120_BURST));
}
-
- ao_radio_spi_send_sync(data, d);
+ ao_radio_spi_send_byte(addr);
}
static void
ao_radio_burst_read_stop (void)
{
+ ao_radio_spi_stop_bytes();
ao_radio_deselect();
}
}
static uint8_t
-ao_radio_tx_fifo_space(void)
+ao_radio_int_pin(void)
{
- return CC1120_FIFO_SIZE - ao_radio_reg_read(CC1120_NUM_TXBYTES);
+ return ao_gpio_get(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, AO_CC1120_INT);
}
#if CC1120_DEBUG
}
static void
-ao_radio_start_tx(void)
+ao_radio_enable_isr(void)
{
- ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr);
ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
ao_exti_enable(AO_CC1120_MCU_WAKEUP_PORT, AO_CC1120_MCU_WAKEUP_PIN);
+}
+
+static void
+ao_radio_start_tx(void)
+{
+ ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr);
ao_radio_tx_finished = 0;
ao_radio_strobe(CC1120_STX);
}
}
/*
- * Packet deviation is 20.5kHz
+ * Packet deviation
*
* fdev = fosc >> 24 * (256 + dev_m) << dev_e
*
+ * Deviation for 38400 baud should be 20.5kHz:
+ *
* 32e6Hz / (2 ** 24) * (256 + 80) * (2 ** 5) = 20508Hz
+ *
+ * Deviation for 9600 baud should be 5.125kHz:
+ *
+ * 32e6Hz / (2 ** 24) * (256 + 80) * (2 ** 3) = 5127Hz
+ *
+ * Deviation for 2400 baud should be 1.28125kHz, but cc1111 and
+ * cc115l can't do that, so we'll use 1.5kHz instead:
+ *
+ * 32e6Hz / (2 ** 24) * (256 + 137) * (2 ** 1) = 1499Hz
*/
-#define PACKET_DEV_E 5
-#define PACKET_DEV_M 80
+#define PACKET_DEV_M_384 80
+#define PACKET_DEV_E_384 5
+
+#define PACKET_DEV_M_96 80
+#define PACKET_DEV_E_96 3
+
+#define PACKET_DEV_M_24 137
+#define PACKET_DEV_E_24 1
/*
* For our packet data
* Rdata = -------------------------------------- * fosc
* 2 ** 39
*
+ * Given the bit period of the baseband, T, the bandwidth of the
+ * baseband signal is B = 1/(2T). The overall bandwidth of the
+ * modulated signal is then Channel bandwidth = 2Δf + 2B.
+ *
+ * 38400 -- 2 * 20500 + 38400 = 79.4 kHz
+ * 9600 -- 2 * 5.125 + 9600 = 19.9 kHz
+ * 2400 -- 2 * 1.5 + 2400 = 5.4 khz
+ *
* Symbol rate 38400 Baud:
*
* DATARATE_M = 239914
* DATARATE_E = 9
- * CHANBW = 74.42 (round to 100)
+ * CHANBW = 79.4 (round to 100)
*
* Symbol rate 9600 Baud:
*
* DATARATE_M = 239914
* DATARATE_E = 7
- * CHANBW = 58.58 (round to 62.5)
+ * CHANBW = 19.9 (round to 20)
*
* Symbol rate 2400 Baud:
*
* DATARATE_M = 239914
* DATARATE_E = 5
- * CHANBW = 47.61 (round to 50)
+ * CHANBW = 5.0 (round to 8.0)
*/
#define PACKET_DRATE_M 239914
#define PACKET_DRATE_E_384 9
-#define PACKET_CHAN_BW_384 0x02 /* 200 / 2 = 100 */
+
+/* 200 / 2 = 100 */
+#define PACKET_CHAN_BW_384 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \
+ (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \
+ (2 << CC1120_CHAN_BW_BB_CIC_DECFACT))
#define PACKET_DRATE_E_96 7
-#define PACKET_CHAN_BW_96 0x42 /* 125 / 2 = 62.5 */
+/* 200 / 10 = 20 */
+#define PACKET_CHAN_BW_96 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \
+ (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \
+ (10 << CC1120_CHAN_BW_BB_CIC_DECFACT))
#define PACKET_DRATE_E_24 5
-#define PACKET_CHAN_BW_24 0x04 /* 200 / 4 = 50 */
+/* 200 / 25 = 8 */
+#define PACKET_CHAN_BW_24 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \
+ (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \
+ (25 << CC1120_CHAN_BW_BB_CIC_DECFACT))
static const uint16_t packet_setup[] = {
- CC1120_DEVIATION_M, PACKET_DEV_M,
- CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) |
- (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) |
- (PACKET_DEV_E << CC1120_MODCFG_DEV_E_DEV_E)),
CC1120_DRATE1, ((PACKET_DRATE_M >> 8) & 0xff),
CC1120_DRATE0, ((PACKET_DRATE_M >> 0) & 0xff),
CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) |
};
static const uint16_t packet_setup_384[] = {
+ CC1120_DEVIATION_M, PACKET_DEV_M_384,
+ CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) |
+ (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) |
+ (PACKET_DEV_E_384 << CC1120_MODCFG_DEV_E_DEV_E)),
CC1120_DRATE2, ((PACKET_DRATE_E_384 << CC1120_DRATE2_DATARATE_E) |
(((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)),
CC1120_CHAN_BW, PACKET_CHAN_BW_384,
};
static const uint16_t packet_setup_96[] = {
+ CC1120_DEVIATION_M, PACKET_DEV_M_96,
+ CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) |
+ (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) |
+ (PACKET_DEV_E_96 << CC1120_MODCFG_DEV_E_DEV_E)),
CC1120_DRATE2, ((PACKET_DRATE_E_96 << CC1120_DRATE2_DATARATE_E) |
(((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)),
CC1120_CHAN_BW, PACKET_CHAN_BW_96,
};
static const uint16_t packet_setup_24[] = {
+ CC1120_DEVIATION_M, PACKET_DEV_M_24,
+ CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) |
+ (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) |
+ (PACKET_DEV_E_24 << CC1120_MODCFG_DEV_E_DEV_E)),
CC1120_DRATE2, ((PACKET_DRATE_E_24 << CC1120_DRATE2_DATARATE_E) |
(((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)),
CC1120_CHAN_BW, PACKET_CHAN_BW_24,
CC1120_PA_CFG0, 0x7e,
};
+#define AO_CC1120_TX_BUFFER 64
+
static const uint16_t packet_tx_setup[] = {
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)),
- AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG,
+ CC1120_FIFO_CFG, ((0 << CC1120_FIFO_CFG_CRC_AUTOFLUSH) |
+ (AO_CC1120_TX_BUFFER << CC1120_FIFO_CFG_FIFO_THR)),
};
static const uint16_t packet_rx_setup[] = {
CC1120_PREAMBLE_CFG1, ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_NONE << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) |
(CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)),
CC1120_PA_CFG0, 0x7d,
+ CC1120_FIFO_CFG, ((0 << CC1120_FIFO_CFG_CRC_AUTOFLUSH) |
+ (AO_CC1120_TX_BUFFER << CC1120_FIFO_CFG_FIFO_THR)),
};
/*
ao_radio_start_tx();
ao_arch_block_interrupts();
- while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake)
+ while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake) {
+ ao_radio_enable_isr();
ao_sleep(&ao_radio_wake);
+ }
ao_arch_release_interrupts();
if (ao_radio_mcu_wake)
ao_radio_check_marc_status();
static void
ao_radio_wait_isr(uint16_t timeout)
{
- if (timeout)
- ao_alarm(timeout);
ao_arch_block_interrupts();
while (!ao_radio_wake && !ao_radio_mcu_wake && !ao_radio_abort)
- if (ao_sleep(&ao_radio_wake))
+ if (ao_sleep_for(&ao_radio_wake, timeout))
ao_radio_abort = 1;
ao_arch_release_interrupts();
- if (timeout)
- ao_clear_alarm();
if (ao_radio_mcu_wake)
ao_radio_check_marc_status();
}
-static uint8_t
-ao_radio_wait_tx(uint8_t wait_fifo)
+static void
+ao_radio_wait_fifo(void)
{
- uint8_t fifo_space = 0;
-
- do {
+ while (ao_radio_int_pin() != 0 && !ao_radio_abort) {
+ ao_radio_wake = 0;
+ ao_radio_enable_isr();
ao_radio_wait_isr(0);
- if (!wait_fifo)
- return 0;
- fifo_space = ao_radio_tx_fifo_space();
- } while (!fifo_space && !ao_radio_abort);
- return fifo_space;
+ }
}
static uint8_t tx_data[(AO_RADIO_MAX_SEND + 4) * 2];
uint8_t encode_len;
uint8_t this_len;
uint8_t started = 0;
- uint8_t fifo_space;
encode_len = ao_fec_encode(d, size, tx_data);
/* Flush any pending TX bytes */
ao_radio_strobe(CC1120_SFTX);
- started = 0;
- fifo_space = CC1120_FIFO_SIZE;
while (encode_len) {
this_len = encode_len;
- ao_radio_wake = 0;
- if (this_len > fifo_space) {
- this_len = fifo_space;
+ if (started) {
+ ao_radio_wait_fifo();
+ if (ao_radio_abort)
+ break;
+ }
+
+ if (this_len > AO_CC1120_TX_BUFFER) {
+ this_len = AO_CC1120_TX_BUFFER;
ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_BUF);
} else {
ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_FINISH);
if (!started) {
ao_radio_start_tx();
started = 1;
- } else {
- ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
- }
-
- fifo_space = ao_radio_wait_tx(encode_len != 0);
- if (ao_radio_abort) {
- ao_radio_idle();
- break;
}
}
- while (started && !ao_radio_abort && !ao_radio_tx_finished)
+ while (started && !ao_radio_abort && !ao_radio_tx_finished) {
+ ao_radio_wake = 0;
+ ao_radio_enable_isr();
ao_radio_wait_isr(0);
+ }
+ if (ao_radio_abort)
+ ao_radio_idle();
ao_radio_put();
}
-#define AO_RADIO_LOTS 64
-
void
ao_radio_send_aprs(ao_radio_fill_func fill)
{
- uint8_t buf[AO_RADIO_LOTS], *b;
+ uint8_t buf[AO_CC1120_TX_BUFFER];
int cnt;
int total = 0;
uint8_t done = 0;
uint8_t started = 0;
- uint8_t fifo_space;
ao_radio_get(0xff);
- fifo_space = CC1120_FIFO_SIZE;
+
+ ao_radio_abort = 0;
+
+ ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr);
while (!done) {
cnt = (*fill)(buf, sizeof(buf));
if (cnt < 0) {
}
total += cnt;
- /* At the last buffer, set the total length */
- if (done)
- ao_radio_set_len(total & 0xff);
-
- b = buf;
- while (cnt) {
- uint8_t this_len = cnt;
-
- /* Wait for some space in the fifo */
- while (!ao_radio_abort && (fifo_space = ao_radio_tx_fifo_space()) == 0) {
- ao_radio_wake = 0;
- ao_radio_wait_isr(0);
- }
+ /* Wait for some space in the fifo */
+ if (started) {
+ ao_radio_wait_fifo();
if (ao_radio_abort)
break;
- if (this_len > fifo_space)
- this_len = fifo_space;
-
- cnt -= this_len;
-
- if (done) {
- if (cnt)
- ao_radio_set_mode(AO_RADIO_MODE_APRS_LAST_BUF);
- else
- ao_radio_set_mode(AO_RADIO_MODE_APRS_FINISH);
- } else
- ao_radio_set_mode(AO_RADIO_MODE_APRS_BUF);
-
- ao_radio_fifo_write(b, this_len);
- b += this_len;
-
- if (!started) {
- ao_radio_start_tx();
- started = 1;
- } else
- ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
}
- if (ao_radio_abort) {
- ao_radio_idle();
- break;
+
+ if (done) {
+ ao_radio_set_len(total & 0xff);
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_FINISH);
+ } else
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_BUF);
+
+ ao_radio_fifo_write(buf, cnt);
+
+ if (!started) {
+ ao_radio_start_tx();
+ started = 1;
}
- /* Wait for the transmitter to go idle */
+ }
+ /* Wait for the transmitter to go idle */
+ while (started && ao_radio_int_pin() != 0 && !ao_radio_abort) {
ao_radio_wake = 0;
+ ao_radio_enable_isr();
ao_radio_wait_isr(0);
}
+ if (ao_radio_abort)
+ ao_radio_idle();
ao_radio_put();
}
{
uint8_t d;
+ if (ao_radio_abort)
+ return;
if (rx_task_id) {
if (ao_radio_try_select(rx_task_id)) {
++rx_fast_start;
rx_starting = 0;
ao_wakeup(&ao_radio_wake);
}
- d = AO_CC1120_SPI.dr;
- AO_CC1120_SPI.dr = 0;
+ d = ao_radio_spi_recv_byte();
if (rx_ignore == 0) {
if (rx_data_cur < rx_data_count)
rx_data[rx_data_cur++] = d;
static uint16_t
ao_radio_rx_wait(void)
{
- ao_alarm(AO_MS_TO_TICKS(100));
ao_arch_block_interrupts();
rx_waiting = 1;
while (rx_data_cur - rx_data_consumed < AO_FEC_DECODE_BLOCK &&
!ao_radio_abort &&
!ao_radio_mcu_wake)
{
- if (ao_sleep(&ao_radio_wake))
+ if (ao_sleep_for(&ao_radio_wake, AO_MS_TO_TICKS(100)))
ao_radio_abort = 1;
}
rx_waiting = 0;
ao_arch_release_interrupts();
- ao_clear_alarm();
if (ao_radio_abort || ao_radio_mcu_wake)
return 0;
rx_data_consumed += AO_FEC_DECODE_BLOCK;
rx_data_count = len * 8; /* bytes to bits */
rx_data_cur = 0;
rx_data_consumed = 0;
- rx_ignore = 2;
+ rx_ignore = 1;
/* Must be set before changing the frequency; any abort
* after the frequency is set needs to terminate the read
ao_exti_set_mode(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN,
AO_EXTI_MODE_FALLING|AO_EXTI_PRIORITY_HIGH);
- ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_rx_isr);
- ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
-
rx_starting = 1;
rx_task_id = ao_cur_task->task_id;
+ ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_rx_isr);
+ ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
+
ao_radio_strobe(CC1120_SRX);
- if (timeout)
- ao_alarm(timeout);
ao_arch_block_interrupts();
while (rx_starting && !ao_radio_abort) {
- if (ao_sleep(&ao_radio_wake))
+ if (ao_sleep_for(&ao_radio_wake, timeout))
ao_radio_abort = 1;
}
uint8_t rx_task_id_save = rx_task_id;
rx_task_id = 0;
rx_starting = 0;
ao_arch_release_interrupts();
- if (timeout)
- ao_clear_alarm();
if (ao_radio_abort) {
+ if (rx_task_id_save == 0)
+ ao_radio_burst_read_stop();
ret = 0;
- rx_task_id = 0;
goto abort;
}
ao_radio_select();
_ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT);
if (rx_ignore) {
- uint8_t ignore = AO_CC1120_SPI.dr;
- (void) ignore;
- AO_CC1120_SPI.dr = 0;
+ (void) ao_radio_spi_recv_byte();
--rx_ignore;
}
}
projects / fw / altos / blobdiff