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firmware: gain control

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This commit is contained in:
Hoernchen
2013-05-27 12:04:16 +02:00
parent d18159cf62
commit abc3cd1f4f
4 changed files with 101 additions and 3 deletions
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51
firmware/common/max2837.c
View File

@ -369,6 +369,57 @@ bool max2837_set_lpf_bandwidth(const uint32_t bandwidth_hz) {
}
}
bool max2837_set_lna_gain(const uint32_t gain_db) {
uint16_t val;
switch(gain_db){
case 40:
val = MAX2837_LNAgain_MAX;
break;
case 32:
val = MAX2837_LNAgain_M8;
break;
case 24:
val = MAX2837_LNAgain_M16;
break;
case 16:
val = MAX2837_LNAgain_M24;
break;
case 8:
val = MAX2837_LNAgain_M32;
break;
case 0:
val = MAX2837_LNAgain_M40;
break;
default:
return false;
}
set_MAX2837_LNAgain(val);
max2837_reg_commit(1);
return true;
}
bool max2837_set_vga_gain(const uint32_t gain_db) {
if( (gain_db & 0x1) || gain_db > 62)/* 0b11111*2 */
return false;
set_MAX2837_VGA( 31-(gain_db >> 1) );
max2837_reg_commit(5);
return true;
}
bool max2837_set_txvga_gain(const uint32_t gain_db, const uint32_t plus16) {
uint16_t val = 31-gain_db;
if(gain_db > 31)/* 0b111111 mind the bit 6 weigth*/
return false;
if(plus16)
val |= 0x20; /* +16db */
set_MAX2837_TXVGA_GAIN(val);
max2837_reg_commit(29);
return true;
}
#ifdef TEST
int main(int ac, char **av)
{

3
firmware/common/max2837.h
View File

@ -45,6 +45,9 @@ extern void max2837_stop(void);
* where order of register writes matters. */
extern void max2837_set_frequency(uint32_t freq);
bool max2837_set_lpf_bandwidth(const uint32_t bandwidth_hz);
bool max2837_set_lna_gain(const uint32_t gain_db);
bool max2837_set_vga_gain(const uint32_t gain_db);
bool max2837_set_txvga_gain(const uint32_t gain_db, const uint32_t plus16);
extern void max2837_tx(void);
extern void max2837_rx(void);

2
firmware/common/max2837_regs.def
View File

@ -56,7 +56,7 @@ __MREG__(MAX2837_LNAgain,1,4,3)
#define MAX2837_LNAgain_M8 0b100
#define MAX2837_LNAgain_M16 0b010
#define MAX2837_LNAgain_M24 0b110
#define MAX2837_LNAgain_M32 0b001
#define MAX2837_LNAgain_M32 0b011
#define MAX2837_LNAgain_M40 0b111
__MREG__(MAX2837_iqerr_trim,1,9,5)
// 0b00000 = +4.0 degree phase error

46
firmware/hackrf_usb/hackrf_usb.c
View File

@ -760,6 +760,47 @@ usb_request_status_t usb_vendor_request_read_partid_serialno(
return USB_REQUEST_STATUS_OK;
}
usb_request_status_t usb_vendor_request_set_lna_gain(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
if( stage == USB_TRANSFER_STAGE_SETUP ) {
const uint8_t value = max2837_set_lna_gain(endpoint->setup.index);
endpoint->buffer[0] = value;
usb_endpoint_schedule(endpoint->in, &endpoint->buffer, 1);
usb_endpoint_schedule_ack(endpoint->out);
return USB_REQUEST_STATUS_OK;
}
return USB_REQUEST_STATUS_OK;
}
usb_request_status_t usb_vendor_request_set_vga_gain(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
if( stage == USB_TRANSFER_STAGE_SETUP ) {
const uint8_t value = max2837_set_vga_gain(endpoint->setup.index);
endpoint->buffer[0] = value;
usb_endpoint_schedule(endpoint->in, &endpoint->buffer, 1);
usb_endpoint_schedule_ack(endpoint->out);
return USB_REQUEST_STATUS_OK;
}
return USB_REQUEST_STATUS_OK;
}
usb_request_status_t usb_vendor_request_set_txvga_gain(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
if( stage == USB_TRANSFER_STAGE_SETUP ) {
const uint8_t value = max2837_set_txvga_gain(
endpoint->setup.index, endpoint->setup.value);
endpoint->buffer[0] = value;
usb_endpoint_schedule(endpoint->in, &endpoint->buffer, 1);
usb_endpoint_schedule_ack(endpoint->out);
return USB_REQUEST_STATUS_OK;
}
return USB_REQUEST_STATUS_OK;
}
static const usb_request_handler_fn vendor_request_handler[] = {
NULL,
usb_vendor_request_set_transceiver_mode,
@ -779,7 +820,10 @@ static const usb_request_handler_fn vendor_request_handler[] = {
usb_vendor_request_read_version_string,
usb_vendor_request_set_freq,
usb_vendor_request_set_amp_enable,
usb_vendor_request_read_partid_serialno
usb_vendor_request_read_partid_serialno,
usb_vendor_request_set_lna_gain,
usb_vendor_request_set_vga_gain,
usb_vendor_request_set_txvga_gain
};
static const uint32_t vendor_request_handler_count =