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firmware: add support for setting max2831 rx hpf corner frequency

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This commit is contained in:
Antoine van Gelder
2025-12-09 10:21:56 +02:00
parent 1925e5908a
commit 7be3c7fdf1
2 changed files with 38 additions and 2 deletions
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28
firmware/common/max2831.c
View File

@@ -380,15 +380,39 @@ bool max2831_set_vga_gain(max2831_driver_t* const drv, const uint32_t gain_db) {
if( (gain_db & 0x1) || gain_db > 62) {/* 0b11111*2 */
return false;
}
set_MAX2831_RXVGA_GAIN(drv, (gain_db >> 1) );
max2831_reg_commit(drv, 11);
return true;
}
bool max2831_set_txvga_gain(max2831_driver_t* const drv, const uint32_t gain_db) {
bool max2831_set_txvga_gain(max2831_driver_t* const drv, const uint32_t gain_db) {
uint16_t value = MIN((gain_db << 1) | 1, 0x3f);
set_MAX2831_TXVGA_GAIN(drv, value);
max2831_reg_commit(drv, 12);
return true;
}
void max2831_set_rx_hpf_frequency(max2831_driver_t* const drv, const max2831_rx_hpf_freq_t freq)
{
/**
* Frequency RXHP RX_HPF_SEL (D13:D12)
*
* 100 Hz low 00
* 4 kHz low x1
* 30 kHz low 10
* 600 kHz high xx
*/
switch (freq) {
case MAX2831_RX_HPF_100_HZ:
case MAX2831_RX_HPF_4_KHZ:
case MAX2831_RX_HPF_30_KHZ:
set_MAX2831_RX_HPF_SEL(drv, freq);
max2831_reg_commit(drv, 7);
gpio_clear(drv->gpio_rxhp);
break;
case MAX2831_RX_HPF_600_KHZ:
gpio_set(drv->gpio_rxhp);
break;
}
}

12
firmware/common/max2831.h
View File

@@ -41,6 +41,13 @@ typedef enum {
MAX2831_MODE_RX_CALIBRATION,
} max2831_mode_t;
typedef enum {
MAX2831_RX_HPF_100_HZ = 0,
MAX2831_RX_HPF_4_KHZ = 1,
MAX2831_RX_HPF_30_KHZ = 2,
MAX2831_RX_HPF_600_KHZ = 3,
} max2831_rx_hpf_freq_t;
struct max2831_driver_t;
typedef struct max2831_driver_t max2831_driver_t;
@@ -91,6 +98,11 @@ bool max2831_set_lna_gain(max2831_driver_t* const drv, const uint32_t gain_db);
bool max2831_set_vga_gain(max2831_driver_t* const drv, const uint32_t gain_db);
bool max2831_set_txvga_gain(max2831_driver_t* const drv, const uint32_t gain_db);
/* Set receiver high-pass filter corner frequency in Hz */
extern void max2831_set_rx_hpf_frequency(
max2831_driver_t* const drv,
const max2831_rx_hpf_freq_t freq);
extern void max2831_tx(max2831_driver_t* const drv);
extern void max2831_rx(max2831_driver_t* const drv);
extern void max2831_tx_calibration(max2831_driver_t* const drv);