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fix(sgpio): Fix rad1o HW bug which inverts RX Q

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As it is only inverted in the RX path (in respect to the HackRF) we need
to distinguish between RX/TX and inverted and not inverted.
This commit is contained in:
Tobias Schneider
2015-07-27 11:30:52 +02:00
parent dfa12fe169
commit 60b3ef3112
1 changed files with 57 additions and 0 deletions
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57
firmware/common/sgpio.c
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@ -30,6 +30,10 @@
static bool sgpio_slice_mode_multislice = true;
#ifdef RAD1O
static void update_q_invert(void);
#endif
void sgpio_configure_pin_functions() {
scu_pinmux(SCU_PINMUX_SGPIO0, SCU_GPIO_FAST | SCU_CONF_FUNCTION3);
scu_pinmux(SCU_PINMUX_SGPIO1, SCU_GPIO_FAST | SCU_CONF_FUNCTION3);
@ -131,6 +135,12 @@ void sgpio_configure(
| (1L << 10) // disable codec data stream during configuration (Output SGPIO10 High)
;
#ifdef RAD1O
// The data direction might have changed. Check if we need to
// adjust the q inversion.
update_q_invert();
#endif
// Enable SGPIO pin outputs.
const uint_fast16_t sgpio_gpio_data_direction =
(direction == SGPIO_DIRECTION_TX)
@ -303,10 +313,57 @@ bool sgpio_cpld_stream_rx_set_decimation(const uint_fast8_t n) {
return (skip_n < 8);
}
#ifdef RAD1O
/* The rad1o hardware has a bug which makes it
* necessary to also switch between the two options based
* on TX or RX mode.
*
* We use the state of the pin to determine which way we
* have to go.
*
* As TX/RX can change without sgpio_cpld_stream_rx_set_q_invert
* being called, we store a local copy of its parameter.
*/
static bool sgpio_invert = false;
/*
* Called when TX/RX changes od sgpio_cpld_stream_rx_set_q_invert
* gets called.
*/
static void update_q_invert(void) {
/* 1=Output SGPIO11 High(TX mode), 0=Output SGPIO11 Low(RX mode)*/
bool tx_mode = (SGPIO_GPIO_OUTREG & (1 << 11)) > 0;
// 0.13: P1_18
if( !sgpio_invert & !tx_mode) {
GPIO_SET(GPIO0) = GPIOPIN13;
} else if( !sgpio_invert & tx_mode) {
GPIO_CLR(GPIO0) = GPIOPIN13;
} else if( sgpio_invert & !tx_mode) {
GPIO_CLR(GPIO0) = GPIOPIN13;
} else if( sgpio_invert & tx_mode) {
GPIO_SET(GPIO0) = GPIOPIN13;
}
}
void sgpio_cpld_stream_rx_set_q_invert(const uint_fast8_t invert) {
if( invert ) {
sgpio_invert = true;
} else {
sgpio_invert = false;
}
update_q_invert();
}
#else
void sgpio_cpld_stream_rx_set_q_invert(const uint_fast8_t invert) {
// 0.13: P1_18
if( invert ) {
GPIO_SET(GPIO0) = GPIOPIN13;
} else {
GPIO_CLR(GPIO0) = GPIOPIN13;
}
}
#endif