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Merge pull request #5 from adafruit/mute-etc

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Mute dac when mac is not making noise
This commit is contained in:
Limor "Ladyada" Fried 2025-03-28 10:54:13 -04:00 committed by GitHub
commit 646926f066
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GPG key ID: B5690EEEBB952194
3 changed files with 25 additions and 9 deletions
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4
.gitignore vendored Normal file
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@ -0,0 +1,4 @@
*.img
*.bin
os.7z
picotool

2
fruitjam-build.sh
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@ -64,8 +64,8 @@ fi
# Append disk name to build directory if disk image is specified
if [ -n "$DISC_IMAGE" ] && [ -f "$DISC_IMAGE" ]; then
# Extract filename without extension
CMAKE_ARGS="$CMAKE_ARGS -DDISC_IMAGE=${DISC_IMAGE}"
DISC_IMAGE=$(basename "$DISC_IMAGE" | sed 's/\.[^.]*$//')
CMAKE_ARGS="$CMAKE_ARGS -DDISK_IMAGE=${DISC_IMAGE}"
TAG=${TAG}_${DISC_IMAGE}
fi

28
src/main.c
View file

@ -104,15 +104,11 @@ static void io_init()
static void poll_led_etc()
{
static int led_on = 0;
static absolute_time_t last = 0;
absolute_time_t now = get_absolute_time();
if (absolute_time_diff_us(last, now) > 500*1000) {
last = now;
//led_on ^= 1;
//gpio_put(GPIO_LED_PIN, led_on);
}
}
@ -205,10 +201,12 @@ static void poll_umac()
#if USE_SD
static int disc_do_read(void *ctx, uint8_t *data, unsigned int offset, unsigned int len)
{
gpio_put(GPIO_LED_PIN, 1);
FIL *fp = (FIL *)ctx;
f_lseek(fp, offset);
unsigned int did_read = 0;
FRESULT fr = f_read(fp, data, len, &did_read);
gpio_put(GPIO_LED_PIN, 0);
if (fr != FR_OK || len != did_read) {
printf("disc: f_read returned %d, read %u (of %u)\n", fr, did_read, len);
return -1;
@ -218,10 +216,12 @@ static int disc_do_read(void *ctx, uint8_t *data, unsigned int offset, unsi
static int disc_do_write(void *ctx, uint8_t *data, unsigned int offset, unsigned int len)
{
gpio_put(GPIO_LED_PIN, 1);
FIL *fp = (FIL *)ctx;
f_lseek(fp, offset);
unsigned int did_write = 0;
FRESULT fr = f_write(fp, data, len, &did_write);
gpio_put(GPIO_LED_PIN, 0);
if (fr != FR_OK || len != did_write) {
printf("disc: f_write returned %d, read %u (of %u)\n", fr, did_write, len);
return -1;
@ -676,9 +676,6 @@ static int volscale;
int16_t audio[SAMPLES_PER_BUFFER];
void umac_audio_trap() {
static int led_on;
led_on ^= 1;
gpio_put(GPIO_LED_PIN, 1);
int32_t offset = 128;
uint16_t *audiodata = (uint16_t*)audio_base;
int scale = volscale;
@ -732,14 +729,29 @@ setup_i2s_dac();
static bool audio_poll() {
audio_buffer_t *buffer = take_audio_buffer(producer_pool, false);
if (!buffer) return false;
gpio_put(GPIO_LED_PIN, 0);
memcpy(buffer->buffer->bytes, audio, sizeof(audio));
buffer->sample_count = SAMPLES_PER_BUFFER;
give_audio_buffer(producer_pool, buffer);
return true;
}
static bool mute_state = false;
static void set_mute_state(bool new_state) {
if(mute_state == new_state) return;
mute_state = new_state;
setPage(1);
if(mute_state) {
modifyRegister(0x28, 0x04, 0x04); // HP Left not muted
modifyRegister(0x29, 0x04, 0x04); // HP Right not muted
} else {
modifyRegister(0x28, 0x04, 0x0); // HP Left muted
modifyRegister(0x29, 0x04, 0x0); // HP Right muted
}
}
void umac_audio_cfg(int volume, int sndres) {
volscale = sndres ? 0 : 65536 * volume / 7;
set_mute_state(volscale != 0);
}
#endif