julixau/audioMux
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firmware: add capability to short all inputs (via serial command)

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This commit is contained in:
Julian Daube 2019-10-21 23:59:43 +02:00
parent 5364d92c1c
commit a60a0fa459
3 changed files with 76 additions and 23 deletions
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5
firmware/Include/main.h
View File

@ -55,7 +55,10 @@ void Error_Handler(void);
void set_input(uint8_t channel);
void set_attenuation(uint8_t left, uint8_t right);
void set_mute(uint8_t mute);
void set_mute(uint8_t mute); //< tries to switch to muted ui state
int is_muted(); //< returns whether the ui is muted
void set_short(uint8_t shorted); //< tries to switch to shorted ui state
int is_shorted();
/* USER CODE BEGIN EFP */

70
firmware/Src/main.c
View File

@ -104,37 +104,49 @@ int test_button_pressed() {
struct ui_state {
uint8_t oldchannel;
uint8_t mute;
enum {
UI_STATE_NORMAL = 0,
UI_STATE_MUTE,
UI_STATE_SHORT,
} state;
} ui_state = {
.oldchannel = -1,
.mute = 0,
.state = UI_STATE_NORMAL,
};
void set_input(uint8_t channel) {
if (ui_state.oldchannel == channel || channel >= 6)
if (ui_state.state != UI_STATE_NORMAL || ui_state.oldchannel == channel || channel >= 6)
return;
set_input_led(ui_state.oldchannel, 0);
// do not disturb the mute mode
if (!ui_state.mute)
{
set_input_led(channel, 1);
// invert bd inputs to match the numbers on the case
bd_set_input(&hi2c1, 5-channel);
}
ui_state.oldchannel = channel;
printf("C%d\n", channel);
}
// only mute if the ui allows to
void set_mute(uint8_t mute) {
if(ui_state.mute == mute)
if(UI_STATE_MUTE == ui_state.state && mute)
// no state change required
return;
if (0 == (ui_state.mute = mute)) {
// figure out the state transition
if (UI_STATE_NORMAL == ui_state.state && mute) {
ui_state.state = UI_STATE_MUTE;
HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, 1);
set_input_led(ui_state.oldchannel, 0);
bd_set_input(&hi2c1, BD_INPUT_MUTE);
}
else if (UI_STATE_MUTE == ui_state.state && !mute)
{
ui_state.state = UI_STATE_NORMAL;
// hack to make reactivation of the last channel easier
uint8_t old_input = ui_state.oldchannel;
ui_state.oldchannel = -1;
@ -142,13 +154,39 @@ void set_mute(uint8_t mute) {
set_input(old_input);
HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, 0);
}
else {
HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, 1);
set_input_led(ui_state.oldchannel, 0);
bd_set_input(&hi2c1, BD_INPUT_MUTE);
}
printf("M%d\n", ui_state.mute?1:0);
int is_muted() {
return ui_state.state == UI_STATE_MUTE;
}
void set_short(uint8_t do_short) {
// test for possible state changes
if (UI_STATE_NORMAL == ui_state.state && do_short)
{
ui_state.state = UI_STATE_SHORT;
bd_set_input(&hi2c1, BD_INPUT_ALL);
// visualize that all inputs are shorted
for (int i = 0; i < 6; ++i)
set_input_led(i, 1);
}
else if (UI_STATE_SHORT == ui_state.state && !do_short)
{
ui_state.state = UI_STATE_NORMAL;
for (int i = 0; i < 6; ++i)
set_input_led(i, 0);
// reactivate currently selected input
uint8_t old_input = ui_state.oldchannel;
ui_state.oldchannel = -1;
set_input(old_input);
}
}
int is_shorted() {
return ui_state.state == UI_STATE_SHORT;
}
void set_attenuation(uint8_t left, uint8_t right) {
@ -202,6 +240,7 @@ int main(void)
set_attenuation(0,0);
int count = 0;
int button_timeout = 0;
/* USER CODE END 2 */
/* Infinite loop */
@ -226,7 +265,8 @@ int main(void)
if (1000 < button_timeout) {
// long press, toggle mute
set_mute(!ui_state.mute);
set_mute(!is_muted());
printf("M%d\n", is_muted());
button_timeout = 0;
}

10
firmware/Src/message_parser.c
View File

@ -156,6 +156,16 @@ int parse_buffer() {
if (next_arg_unsigned(&mute)) break;
set_mute(mute);
printf("M%d\n", is_muted());
}
break;
case 'S':
{
uint16_t shorted;
if (next_arg_unsigned(&shorted)) break;
set_short(shorted);
printf("S%d\n", is_shorted());
}
break;
case 'B':