XHRA-2HPA configuration file for Untz v4.6

untz-4.6.cfg

# vim: ft=python
from itertools import chain

def flatten(x):
    return list(chain.from_iterable(x))

G = globals()

# USB Identification

VENDOR_ID = 0x20B1
PRODUCT_ID = 0x3066

# Format of the given USB strings
#   ASCII = 0
#   UNICODE = 1
# If format is mentioned as 1 (UNICODE), then the following
# USB strings are interpreted as unicode instead of ascii.
STRING_FORMAT = 0
VENDOR_STRING = "summivox"
PRODUCT_STRING = "Untz v4.6"
SERIAL_STRING = "0003"
LANGUAGE_ID = 0x0409

# Power options
MAX_POWER = 0xFA
SELF_POWER_ENABLE = 0

# USB Audio class 1.0 enable/disable
UAC_1_ENABLE = 0

# USB HID inputs enable/disable
HID_INPUTS_ENABLE = 0

# I2S data formats
#   I2S_DEFAULT = 0
#   I2S_LEFT_ALIGNED = 1
#   I2S_RIGHT_ALIGNED = 2
#
I2S_DATA_FORMAT = 0

# Audio sample rates enable/disable
# Bitmap to enable/disable each supported sample rate.
#     |  Bit7  |  Bit6  |  Bit5  |  Bit4  |  Bit3  |  Bit2  |  Bit1  |  Bit0  |
#     | 352.8K | 176.4K | 88.2K  | 44.1K  |  384K  |  192K  |  96K   |  48K   |
SAMPLE_RATE_BITMAP = 0b01110111

# Any variables required for writing event actions can be declared here
# Example: I2C address of the DAC can be set as a variable called
# DAC_I2C_ADDR = 0x48; For ease of writing I2C_WRITE command, the register
# addresses can also be set to variables.

EN_48 = 2 # LOW => no clock, HIGH => play 48k multiple audio
EN_44 = 3 # LOW => no clock, HIGH => play 44.1k multiple audio
OEN = 5 # LOW => output muted, HIGH => output enabled
MUTE = 6 # LOW => play audio, HIGH => muted
NRST = 7 # LOW => reset, HIGH => play audio

# change clock:
# - mute, wait,
# - reset, disable both clocks, wait,
# - enable clock, wait,
# - no reset, wait

CLOCK_BEFORE = [
    GPIO(MUTE, HIGH),
    DELAY_MS(10),
    GPIO(OEN, LOW),
    DELAY_MS(1),
    GPIO(NRST, LOW),
    GPIO(EN_48, LOW),
    GPIO(EN_44, LOW),
    DELAY_MS(1),
    ]

CLOCK_AFTER = [
    DELAY_MS(10),
    GPIO(NRST, HIGH),
    DELAY_MS(10),
    GPIO(OEN, HIGH),
    DELAY_MS(1),
    ]

EVT_SYS_INIT = [
    GPIO(EN_48, LOW),
    GPIO(EN_44, LOW),
    GPIO(OEN, LOW),
    GPIO(MUTE, HIGH),
    GPIO(NRST, LOW),
    ]

EVT_USB_CONNECT = []

EVT_USB_DISCONNECT = []

EVT_STRM_START = [
    GPIO(MUTE, LOW),
    ]

EVT_STRM_STOP = [
    GPIO(MUTE, HIGH),
    ]

for ev in ['EVT_SEL_48K', 'EVT_SEL_96K', 'EVT_SEL_192K', 'EVT_SEL_384K']:
    G[ev] = flatten([
        CLOCK_BEFORE,
        GPIO(EN_48, HIGH),
        CLOCK_AFTER,
        ])
for ev in ['EVT_SEL_44_1K', 'EVT_SEL_88_2K', 'EVT_SEL_176_4K', 'EVT_SEL_352_8K']:
    G[ev] = flatten([
        CLOCK_BEFORE,
        GPIO(EN_44, HIGH),
        CLOCK_AFTER,
        ])

EVT_DSD_ACTIVE = []
EVT_PCM_ACTIVE = []

EVT_SEL_DSD128 = []
EVT_SEL_DSD64 = []