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Extract rf_path code into a separate .c/.h.

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Add an rf_path_init() function to do initial, idle configuration during start-up.
This commit is contained in:
Jared Boone
2013-09-07 22:22:03 -07:00
parent 7cf4058372
commit b5dc264d22
6 changed files with 141 additions and 117 deletions
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1
firmware/hackrf_usb/Makefile
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@ -23,6 +23,7 @@
BINARY = hackrf_usb
SRC = $(BINARY).c \
rf_path.c \
usb.c \
usb_request.c \
usb_standard_request.c \

1
firmware/hackrf_usb/Makefile_rom_to_ram
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@ -23,6 +23,7 @@
BINARY = hackrf_usb_rom_to_ram
SRC = hackrf_usb.c \
rf_path.c \
usb.c \
usb_request.c \
usb_standard_request.c \

121
firmware/hackrf_usb/hackrf_usb.c
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@ -45,6 +45,8 @@
#include "usb_descriptor.h"
#include "usb_standard_request.h"
#include "rf_path.h"
static volatile transceiver_mode_t transceiver_mode = TRANSCEIVER_MODE_OFF;
void sgpio_isr_rx();
@ -79,119 +81,6 @@ typedef struct {
set_sample_r_params_t set_sample_r_params;
#ifdef JAWBREAKER
/*
* RF switches on Jawbreaker are controlled by General Purpose Outputs (GPO) on
* the RFFC5072.
*/
#define SWITCHCTRL_NO_TX_AMP_PWR (1 << 0) /* GPO1 turn off TX amp power */
#define SWITCHCTRL_AMP_BYPASS (1 << 1) /* GPO2 bypass amp section */
#define SWITCHCTRL_TX (1 << 2) /* GPO3 1 for TX mode, 0 for RX mode */
#define SWITCHCTRL_MIX_BYPASS (1 << 3) /* GPO4 bypass RFFC5072 mixer section */
#define SWITCHCTRL_HP (1 << 4) /* GPO5 1 for high-pass, 0 for low-pass */
#define SWITCHCTRL_NO_RX_AMP_PWR (1 << 5) /* GPO6 turn off RX amp power */
/*
GPO6 GPO5 GPO4 GPO3 GPO2 GPO1
!RXAMP HP MIXBP TX AMPBP !TXAMP Mix mode Amp mode
1 X 1 1 1 1 TX bypass Bypass
1 X 1 1 0 0 TX bypass TX amplified
1 1 0 1 1 1 TX high Bypass
1 1 0 1 0 0 TX high TX amplified
1 0 0 1 1 1 TX low Bypass
1 0 0 1 0 0 TX low TX amplified
1 X 1 0 1 1 RX bypass Bypass
0 X 1 0 0 1 RX bypass RX amplified
1 1 0 0 1 1 RX high Bypass
0 1 0 0 0 1 RX high RX amplified
1 0 0 0 1 1 RX low Bypass
0 0 0 0 0 1 RX low RX amplified
*/
/*
* Safe (initial) switch settings turn off both amplifiers and enable both amp
* bypass and mixer bypass.
*/
#define SWITCHCTRL_SAFE (SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_TX | SWITCHCTRL_MIX_BYPASS | SWITCHCTRL_HP | SWITCHCTRL_NO_RX_AMP_PWR)
#endif
uint8_t switchctrl = SWITCHCTRL_SAFE;
typedef enum {
RF_PATH_DIRECTION_RX,
RF_PATH_DIRECTION_TX,
} rf_path_direction_t;
void rf_path_set_direction(const rf_path_direction_t direction) {
/* Turn off TX and RX amplifiers, then enable based on direction and bypass state. */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
if( direction == RF_PATH_DIRECTION_TX ) {
switchctrl |= SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* TX amplifier is in path, be sure to enable TX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_TX_AMP_PWR;
}
rffc5071_tx();
} else {
switchctrl &= ~SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* RX amplifier is in path, be sure to enable RX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_RX_AMP_PWR;
}
rffc5071_rx();
}
rffc5071_set_gpo(switchctrl);
}
typedef enum {
RF_PATH_FILTER_BYPASS,
RF_PATH_FILTER_LOW_PASS,
RF_PATH_FILTER_HIGH_PASS,
} rf_path_filter_t;
void rf_path_set_filter(const rf_path_filter_t filter) {
switch(filter) {
default:
case RF_PATH_FILTER_BYPASS:
switchctrl |= SWITCHCTRL_MIX_BYPASS;
rffc5071_disable();
break;
case RF_PATH_FILTER_LOW_PASS:
switchctrl &= ~(SWITCHCTRL_HP | SWITCHCTRL_MIX_BYPASS);
rffc5071_enable();
break;
case RF_PATH_FILTER_HIGH_PASS:
switchctrl &= ~SWITCHCTRL_MIX_BYPASS;
switchctrl |= SWITCHCTRL_HP;
rffc5071_enable();
break;
}
rffc5071_set_gpo(switchctrl);
}
void rf_path_set_lna(const uint_fast8_t enable) {
if( enable ) {
if( switchctrl & SWITCHCTRL_TX ) {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=0 */
switchctrl |= SWITCHCTRL_NO_RX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR);
} else {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=0, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_RX_AMP_PWR);
}
} else {
/* AMP_BYPASS=1, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
}
rffc5071_set_gpo(switchctrl);
}
#define FREQ_ONE_MHZ (1000*1000)
#define MIN_LP_FREQ_MHZ (5)
@ -1107,10 +996,8 @@ int main(void) {
max2837_set_frequency(ifreq);
rffc5071_setup();
#ifdef JAWBREAKER
/* initial safe switch control settings */
rffc5071_set_gpo(switchctrl);
#endif
rf_path_init();
while(true) {
// Wait until buffer 0 is transmitted/received.

109
firmware/hackrf_usb/rf_path.c Normal file
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@ -0,0 +1,109 @@
#include "rf_path.h"
#include <rffc5071.h>
#ifdef JAWBREAKER
/*
* RF switches on Jawbreaker are controlled by General Purpose Outputs (GPO) on
* the RFFC5072.
*/
#define SWITCHCTRL_NO_TX_AMP_PWR (1 << 0) /* GPO1 turn off TX amp power */
#define SWITCHCTRL_AMP_BYPASS (1 << 1) /* GPO2 bypass amp section */
#define SWITCHCTRL_TX (1 << 2) /* GPO3 1 for TX mode, 0 for RX mode */
#define SWITCHCTRL_MIX_BYPASS (1 << 3) /* GPO4 bypass RFFC5072 mixer section */
#define SWITCHCTRL_HP (1 << 4) /* GPO5 1 for high-pass, 0 for low-pass */
#define SWITCHCTRL_NO_RX_AMP_PWR (1 << 5) /* GPO6 turn off RX amp power */
/*
GPO6 GPO5 GPO4 GPO3 GPO2 GPO1
!RXAMP HP MIXBP TX AMPBP !TXAMP Mix mode Amp mode
1 X 1 1 1 1 TX bypass Bypass
1 X 1 1 0 0 TX bypass TX amplified
1 1 0 1 1 1 TX high Bypass
1 1 0 1 0 0 TX high TX amplified
1 0 0 1 1 1 TX low Bypass
1 0 0 1 0 0 TX low TX amplified
1 X 1 0 1 1 RX bypass Bypass
0 X 1 0 0 1 RX bypass RX amplified
1 1 0 0 1 1 RX high Bypass
0 1 0 0 0 1 RX high RX amplified
1 0 0 0 1 1 RX low Bypass
0 0 0 0 0 1 RX low RX amplified
*/
/*
* Safe (initial) switch settings turn off both amplifiers and enable both amp
* bypass and mixer bypass.
*/
#define SWITCHCTRL_SAFE (SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_TX | SWITCHCTRL_MIX_BYPASS | SWITCHCTRL_HP | SWITCHCTRL_NO_RX_AMP_PWR)
#endif
uint8_t switchctrl = SWITCHCTRL_SAFE;
void rf_path_init(void) {
rffc5071_set_gpo(switchctrl);
}
void rf_path_set_direction(const rf_path_direction_t direction) {
/* Turn off TX and RX amplifiers, then enable based on direction and bypass state. */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
if( direction == RF_PATH_DIRECTION_TX ) {
switchctrl |= SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* TX amplifier is in path, be sure to enable TX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_TX_AMP_PWR;
}
rffc5071_tx();
} else {
switchctrl &= ~SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* RX amplifier is in path, be sure to enable RX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_RX_AMP_PWR;
}
rffc5071_rx();
}
rffc5071_set_gpo(switchctrl);
}
void rf_path_set_filter(const rf_path_filter_t filter) {
switch(filter) {
default:
case RF_PATH_FILTER_BYPASS:
switchctrl |= SWITCHCTRL_MIX_BYPASS;
rffc5071_disable();
break;
case RF_PATH_FILTER_LOW_PASS:
switchctrl &= ~(SWITCHCTRL_HP | SWITCHCTRL_MIX_BYPASS);
rffc5071_enable();
break;
case RF_PATH_FILTER_HIGH_PASS:
switchctrl &= ~SWITCHCTRL_MIX_BYPASS;
switchctrl |= SWITCHCTRL_HP;
rffc5071_enable();
break;
}
rffc5071_set_gpo(switchctrl);
}
void rf_path_set_lna(const uint_fast8_t enable) {
if( enable ) {
if( switchctrl & SWITCHCTRL_TX ) {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=0 */
switchctrl |= SWITCHCTRL_NO_RX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR);
} else {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=0, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_RX_AMP_PWR);
}
} else {
/* AMP_BYPASS=1, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
}
rffc5071_set_gpo(switchctrl);
}

25
firmware/hackrf_usb/rf_path.h Normal file
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@ -0,0 +1,25 @@
#ifndef __RFPATH_H__
#define __RFPATH_H__
#include <stdint.h>
void rf_path_init(void);
typedef enum {
RF_PATH_DIRECTION_RX,
RF_PATH_DIRECTION_TX,
} rf_path_direction_t;
void rf_path_set_direction(const rf_path_direction_t direction);
typedef enum {
RF_PATH_FILTER_BYPASS,
RF_PATH_FILTER_LOW_PASS,
RF_PATH_FILTER_HIGH_PASS,
} rf_path_filter_t;
void rf_path_set_filter(const rf_path_filter_t filter);
void rf_path_set_lna(const uint_fast8_t enable);
#endif/*__RFPATH_H__*/

1
firmware/hackrf_usb_rom_to_ram/Makefile
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@ -25,6 +25,7 @@ BINARY = hackrf_usb_rom_to_ram
SRC_DIR = hackrf_usb
SRC = hackrf_usb.c \
rf_path.c \
usb.c \
usb_request.c \
usb_standard_request.c \