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-rw-r--r--firmware/microblaze/lib/db.h78
-rw-r--r--firmware/microblaze/lib/db_init.c291
-rw-r--r--firmware/microblaze/lib/u2_init.c1
3 files changed, 0 insertions, 370 deletions
diff --git a/firmware/microblaze/lib/db.h b/firmware/microblaze/lib/db.h
index 5153822c6..358cb222b 100644
--- a/firmware/microblaze/lib/db.h
+++ b/firmware/microblaze/lib/db.h
@@ -28,82 +28,4 @@
int read_dboard_eeprom(int i2c_addr);
-struct db_base;
-
-/* pointers to daughterboard structures */
-extern struct db_base *tx_dboard;
-extern struct db_base *rx_dboard;
-
-
-//! Intermediate tuning information
-
-struct tune_result
-{
- //! The RF frequency that corresponds to DC in the IF from the daughterboard
- u2_fxpt_freq_t baseband_freq;
-
- //! The DDC/DUC frequency used to down/up convert to/from the target frequency
- u2_fxpt_freq_t dxc_freq;
-
- //! Any differerence btwn target and actual (typically < 0.01 Hz)
- u2_fxpt_freq_t residual_freq;
-
- //! Is the complex baseband spectrum inverted
- bool inverted;
-};
-
-
-/*!
- * \brief One-time init at powerup
- *
- * Sets rx_dboard, tx_dboard and initializes daughterboards.
- */
-void
-db_init(void);
-
-/*!
- * \brief Set daughterboard LO offset frequency.
- *
- * \param[in] db is the daughterboard instance
- * \param[in] offset is the amount to add to tuning requests
- * \param[out] success or failure
- */
-bool
-db_set_lo_offset(struct db_base *db, u2_fxpt_freq_t offset);
-
-/*!
- * \brief Two stage tuning. Given target_freq, tune LO and DDC/DUC
- *
- * \param[in] db is the daughterboard instance
- * \param[in] target_freq is the freq to translate the complex baseband to/from.
- * \param[out] result provides details of the resulting configuration.
- *
- */
-bool
-db_tune(struct db_base *db, u2_fxpt_freq_t target_freq, struct tune_result *result);
-
-
-/*
- * Set only the DDC frequency
- */
-bool
-db_set_ddc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
-
-/*
- * Set only the DUC frequency
- */
-bool
-db_set_duc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
-
-
-/*!
- * \brief Set gain
- */
-bool
-db_set_gain(struct db_base *db, u2_fxpt_gain_t gain);
-
-
-void
-set_atr_regs(int bank, int atr_rxval, int atr_txval);
-
#endif /* INCLUDED_DB_H */
diff --git a/firmware/microblaze/lib/db_init.c b/firmware/microblaze/lib/db_init.c
index 4a0b49ada..23805d9cd 100644
--- a/firmware/microblaze/lib/db_init.c
+++ b/firmware/microblaze/lib/db_init.c
@@ -75,294 +75,3 @@ read_dboard_eeprom(int i2c_addr)
return -2;
}
}
-
-
-static struct db_base *
-lookup_dbid(int dbid)
-{
- return 0;
-}
-
-static struct db_base *
-lookup_dboard(int i2c_addr, struct db_base *default_db, char *msg)
-{
- struct db_base *db;
- int dbid = read_dboard_eeprom(i2c_addr);
-
- // FIXME removing this printf has the system hang if there are two d'boards
- // installed. (I think the problem is in i2c_read/write or the way
- // I kludge the zero-byte write to set the read address in eeprom_read.)
- printf("%s dbid: 0x%x\n", msg, dbid);
-
- if (dbid < 0){ // there was some kind of problem. Treat as Basic Tx
- return default_db;
- }
- else if ((db = lookup_dbid(dbid)) == 0){
- printf("No daugherboard code for dbid = 0x%x\n", dbid);
- return default_db;
- }
- return db;
-}
-
-void
-set_atr_regs(int bank, int atr_rxval, int atr_txval)
-{
- uint32_t val[4];
- int shift;
- int mask;
- int i;
-
- val[ATR_IDLE] = atr_rxval;
- val[ATR_RX] = atr_rxval;
- val[ATR_TX] = atr_txval;
- val[ATR_FULL] = atr_txval;
-
- if (bank == GPIO_TX_BANK){
- mask = 0xffff0000;
- shift = 16;
- }
- else {
- mask = 0x0000ffff;
- shift = 0;
- }
-
- for (i = 0; i < 4; i++){
- int t = (atr_regs->v[i] & ~mask) | ((val[i] << shift) & mask);
- //printf("atr_regs[%d] = 0x%x\n", i, t);
- atr_regs->v[i] = t;
- }
-}
-
-static void
-set_gpio_mode(int bank, struct db_base *db)
-{
- int i;
-
- hal_gpio_set_ddr(bank, /*db->output_enables*/0, 0xffff);
- //set_atr_regs(bank, db);
-
- for (i = 0; i < 16; i++){
- if (/*db->used_pins*/0 & (1 << i)){
- // set to either GPIO_SEL_SW or GPIO_SEL_ATR
- hal_gpio_set_sel(bank, i, (/*db->atr_mask*/0 & (1 << i)) ? 'a' : 's');
- }
- }
-}
-
-static int __attribute__((unused))
-determine_tx_mux_value(struct db_base *db)
-{
- if (/*db->i_and_q_swapped*/0)
- return 0x01;
- else
- return 0x10;
-}
-
-static int
-determine_rx_mux_value(struct db_base *db)
-{
-#define ADC0 0x0
-#define ADC1 0x1
-#define ZERO 0x2
-
- static int truth_table[8] = {
- /* swap_iq, uses */
- /* 0, 0x0 */ (ZERO << 2) | ZERO, // N/A
- /* 0, 0x1 */ (ZERO << 2) | ADC0,
- /* 0, 0x2 */ (ZERO << 2) | ADC1,
- /* 0, 0x3 */ (ADC1 << 2) | ADC0,
- /* 1, 0x0 */ (ZERO << 2) | ZERO, // N/A
- /* 1, 0x1 */ (ZERO << 2) | ADC0,
- /* 1, 0x2 */ (ZERO << 2) | ADC1,
- /* 1, 0x3 */ (ADC0 << 2) | ADC1,
- };
-
- int subdev0_uses;
- int subdev1_uses;
- int uses;
-
- if (/*db->is_quadrature*/0)
- subdev0_uses = 0x3; // uses A/D 0 and 1
- else
- subdev0_uses = 0x1; // uses A/D 0 only
-
- // FIXME second subdev on Basic Rx, LF RX
- // if subdev2 exists
- // subdev1_uses = 0x2;
- subdev1_uses = 0;
-
- uses = subdev0_uses;
-
- int swap_iq = /*db->i_and_q_swapped*/0 & 0x1;
- int index = (swap_iq << 2) | uses;
-
- return truth_table[index];
-}
-
-
-void
-db_init(void)
-{
- /*int m;
-
- tx_dboard = lookup_dboard(I2C_ADDR_TX_A, &db_basic_tx, "Tx");
- //printf("db_init: tx dbid = 0x%x\n", tx_dboard->dbid);
- set_gpio_mode(GPIO_TX_BANK, tx_dboard);
- tx_dboard->init(tx_dboard);
- m = determine_tx_mux_value(tx_dboard);
- dsp_tx_regs->tx_mux = m;
- //printf("tx_mux = 0x%x\n", m);
- tx_dboard->current_lo_offset = tx_dboard->default_lo_offset;
-
- rx_dboard = lookup_dboard(I2C_ADDR_RX_A, &db_basic_rx, "Rx");
- //printf("db_init: rx dbid = 0x%x\n", rx_dboard->dbid);
- set_gpio_mode(GPIO_RX_BANK, rx_dboard);
- rx_dboard->init(rx_dboard);
- m = determine_rx_mux_value(rx_dboard);
- dsp_rx_regs->rx_mux = m;
- //printf("rx_mux = 0x%x\n", m);
- rx_dboard->current_lo_offset = rx_dboard->default_lo_offset;*/
-}
-
-/*!
- * Calculate the frequency to use for setting the digital down converter.
- *
- * \param[in] target_freq desired RF frequency (Hz)
- * \param[in] baseband_freq the RF frequency that corresponds to DC in the IF.
- *
- * \param[out] dxc_freq is the value for the ddc
- * \param[out] inverted is true if we're operating in an inverted Nyquist zone.
-*/
-void
-calc_dxc_freq(u2_fxpt_freq_t target_freq, u2_fxpt_freq_t baseband_freq,
- u2_fxpt_freq_t *dxc_freq, bool *inverted)
-{
- u2_fxpt_freq_t fs = U2_DOUBLE_TO_FXPT_FREQ(100e6); // converter sample rate
- u2_fxpt_freq_t delta = target_freq - baseband_freq;
-
-#if 0
- printf("calc_dxc_freq\n");
- printf(" fs = "); print_fxpt_freq(fs); newline();
- printf(" target = "); print_fxpt_freq(target_freq); newline();
- printf(" baseband = "); print_fxpt_freq(baseband_freq); newline();
- printf(" delta = "); print_fxpt_freq(delta); newline();
-#endif
-
- if (delta >= 0){
- while (delta > fs)
- delta -= fs;
- if (delta <= fs/2){ // non-inverted region
- *dxc_freq = -delta;
- *inverted = false;
- }
- else { // inverted region
- *dxc_freq = delta - fs;
- *inverted = true;
- }
- }
- else {
- while (delta < -fs)
- delta += fs;
- if (delta >= -fs/2){ // non-inverted region
- *dxc_freq = -delta;
- *inverted = false;
- }
- else { // inverted region
- *dxc_freq = delta + fs;
- *inverted = true;
- }
- }
-}
-
-bool
-db_set_lo_offset(struct db_base *db, u2_fxpt_freq_t offset)
-{
- //db->current_lo_offset = offset;
- return true;
-}
-
-bool
-db_tune(struct db_base *db, u2_fxpt_freq_t target_freq, struct tune_result *result)
-{
- /*memset(result, 0, sizeof(*result));
- bool inverted = false;
- u2_fxpt_freq_t dxc_freq;
- u2_fxpt_freq_t actual_dxc_freq;
-
- // Ask the d'board to tune as closely as it can to target_freq+lo_offset
- bool ok = db->set_freq(db, target_freq+db->current_lo_offset, &result->baseband_freq);
-
- // Calculate the DDC setting that will downconvert the baseband from the
- // daughterboard to our target frequency.
- calc_dxc_freq(target_freq, result->baseband_freq, &dxc_freq, &inverted);
-
- // If the spectrum is inverted, and the daughterboard doesn't do
- // quadrature downconversion, we can fix the inversion by flipping the
- // sign of the dxc_freq... (This only happens using the basic_rx board)
-
- if (db->spectrum_inverted)
- inverted = !inverted;
-
- if (inverted && !db->is_quadrature){
- dxc_freq = -dxc_freq;
- inverted = !inverted;
- }
-
- if (db->is_tx){
- dxc_freq = -dxc_freq; // down conversion versus up conversion
- ok &= db_set_duc_freq(dxc_freq, &actual_dxc_freq);
- }
- else {
- ok &= db_set_ddc_freq(dxc_freq, &actual_dxc_freq);
- }
-
- result->dxc_freq = dxc_freq;
- result->residual_freq = dxc_freq - actual_dxc_freq;
- result->inverted = inverted;
- return ok;*/return false;
-}
-
-static int32_t
-compute_freq_control_word(u2_fxpt_freq_t target_freq, u2_fxpt_freq_t *actual_freq)
-{
- // If we were using floating point, we'd calculate
- // master = 100e6;
- // v = (int) rint(target_freq / master_freq) * pow(2.0, 32.0);
-
- //printf("compute_freq_control_word\n");
- //printf(" target_freq = "); print_fxpt_freq(target_freq); newline();
-
- int32_t master_freq = 100000000; // 100M
-
- int32_t v = ((target_freq << 12)) / master_freq;
- //printf(" fcw = %d\n", v);
-
- *actual_freq = (v * (int64_t) master_freq) >> 12;
-
- //printf(" actual = "); print_fxpt_freq(*actual_freq); newline();
-
- return v;
-}
-
-
-bool
-db_set_ddc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq)
-{
- int32_t v = compute_freq_control_word(dxc_freq, actual_dxc_freq);
- dsp_rx_regs->freq = v;
- return true;
-}
-
-bool
-db_set_duc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq)
-{
- int32_t v = compute_freq_control_word(dxc_freq, actual_dxc_freq);
- dsp_tx_regs->freq = v;
- return true;
-}
-
-bool
-db_set_gain(struct db_base *db, u2_fxpt_gain_t gain)
-{
- return false;//db->set_gain(db, gain);
-}
diff --git a/firmware/microblaze/lib/u2_init.c b/firmware/microblaze/lib/u2_init.c
index c56468c08..bd3302d95 100644
--- a/firmware/microblaze/lib/u2_init.c
+++ b/firmware/microblaze/lib/u2_init.c
@@ -86,7 +86,6 @@ u2_init(void)
bp_init(); // buffer pool
lsadc_init(); // low-speed ADCs
lsdac_init(); // low-speed DACs
- db_init(); // daughterboard init
hal_enable_ints();
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 00:56:34 +0000