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Add MAX2837 functions to control operating mode.

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Replace direct manipulation of GPIOs controlling MAX2837 with operating mode functions.
This commit is contained in:
Jared Boone
2013-09-06 21:29:31 -07:00
parent 7c5db57f02
commit a5c0b5deeb
3 changed files with 52 additions and 13 deletions
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53
firmware/common/max2837.c
View File

@ -220,14 +220,53 @@ void max2837_regs_commit(void)
}
}
void max2837_mode_shutdown(void) {
/* All circuit blocks are powered down, except the 4-wire serial bus
* and its internal programmable registers.
*/
gpio_clear(PORT_XCVR_ENABLE,
(PIN_XCVR_ENABLE | PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE));
}
void max2837_mode_standby(void) {
/* Used to enable the frequency synthesizer block while the rest of the
* device is powered down. In this mode, PLL, VCO, and LO generator
* are on, so that Tx or Rx modes can be quickly enabled from this mode.
* These and other blocks can be selectively enabled in this mode.
*/
gpio_clear(PORT_XCVR_ENABLE, (PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE));
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_ENABLE);
}
void max2837_mode_tx(void) {
/* All Tx circuit blocks are powered on. The external PA is powered on
* after a programmable delay using the on-chip PA bias DAC. The slow-
* charging Rx circuits are in a precharged “idle-off” state for fast
* Tx-to-Rx turnaround time.
*/
gpio_clear(PORT_XCVR_ENABLE, PIN_XCVR_RXENABLE);
gpio_set(PORT_XCVR_ENABLE,
(PIN_XCVR_ENABLE | PIN_XCVR_TXENABLE));
}
void max2837_mode_rx(void) {
/* All Rx circuit blocks are powered on and active. Antenna signal is
* applied; RF is downconverted, filtered, and buffered at Rx BB I and Q
* outputs. The slow- charging Tx circuits are in a precharged “idle-off”
* state for fast Rx-to-Tx turnaround time.
*/
gpio_clear(PORT_XCVR_ENABLE, PIN_XCVR_TXENABLE);
gpio_set(PORT_XCVR_ENABLE,
(PIN_XCVR_ENABLE | PIN_XCVR_RXENABLE));
}
void max2837_start(void)
{
LOG("# max2837_start\n");
set_MAX2837_EN_SPI(1);
max2837_regs_commit();
#if !defined TEST
gpio_clear(PORT_XCVR_ENABLE, (PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE));
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_ENABLE);
max2837_mode_standby();
#endif
}
@ -238,9 +277,7 @@ void max2837_tx(void)
set_MAX2837_ModeCtrl(MAX2837_ModeCtrl_TxLPF);
max2837_regs_commit();
gpio_clear(PORT_XCVR_ENABLE, PIN_XCVR_RXENABLE);
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_TXENABLE);
max2837_mode_tx();
#endif
}
@ -252,8 +289,7 @@ void max2837_rx(void)
max2837_regs_commit();
#if !defined TEST
gpio_clear(PORT_XCVR_ENABLE, PIN_XCVR_TXENABLE);
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_RXENABLE);
max2837_mode_rx();
#endif
}
@ -263,8 +299,7 @@ void max2837_stop(void)
set_MAX2837_EN_SPI(0);
max2837_regs_commit();
#if !defined TEST
gpio_clear(PORT_XCVR_ENABLE,
(PIN_XCVR_ENABLE | PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE));
max2837_mode_shutdown();
#endif
}

5
firmware/common/max2837.h
View File

@ -37,6 +37,11 @@ extern void max2837_regs_read(void);
* provided routines for those operations. */
extern void max2837_regs_commit(void);
void max2837_mode_shutdown(void);
void max2837_mode_standby(void);
void max2837_mode_tx(void);
void max2837_mode_rx(void);
/* Turn on/off all chip functions. Does not control oscillator and CLKOUT */
extern void max2837_start(void);
extern void max2837_stop(void);

7
firmware/hackrf_usb/hackrf_usb.c
View File

@ -115,7 +115,7 @@ bool set_freq(uint32_t freq_mhz, uint32_t freq_hz)
success = true;
gpio_clear(PORT_XCVR_ENABLE, (PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE));
max2837_mode_standby();
if(freq_mhz >= MIN_LP_FREQ_MHZ)
{
if(freq_mhz < MAX_LP_FREQ_MHZ)
@ -172,10 +172,9 @@ bool set_freq(uint32_t freq_mhz, uint32_t freq_hz)
success = false;
}
if(transceiver_mode == TRANSCEIVER_MODE_RX)
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_RXENABLE);
max2837_mode_rx();
else if(transceiver_mode == TRANSCEIVER_MODE_TX)
gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_TXENABLE);
max2837_mode_tx();
freq_mhz_cache = freq_mhz;
freq_hz_cache = freq_hz;
return success;