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Expose camera control button resistance values

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Allows fine tuning of the voltage divider resistance values for each button to account for slight variances amongst cameras. Also allows manual configuration for non-standard cameras. Resistance values are in 100ohm steps.
This commit is contained in:
Bruce Luckcuck 2019-07-06 08:02:32 -04:00
parent 7471ada0c1
commit 4a7cfeb34f
3 changed files with 8 additions and 3 deletions
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1
src/main/cli/settings.c
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@ -1395,6 +1395,7 @@ const clivalue_t valueTable[] = {
{ "camera_control_ref_voltage", VAR_UINT16 | MASTER_VALUE, .config.minmaxUnsigned = { 200, 400 }, PG_CAMERA_CONTROL_CONFIG, offsetof(cameraControlConfig_t, refVoltage) },
{ "camera_control_key_delay", VAR_UINT16 | MASTER_VALUE, .config.minmaxUnsigned = { 100, 500 }, PG_CAMERA_CONTROL_CONFIG, offsetof(cameraControlConfig_t, keyDelayMs) },
{ "camera_control_internal_resistance", VAR_UINT16 | MASTER_VALUE, .config.minmaxUnsigned = { 10, 1000 }, PG_CAMERA_CONTROL_CONFIG, offsetof(cameraControlConfig_t, internalResistance) },
{ "camera_control_button_resistance", VAR_UINT16 | MASTER_VALUE | MODE_ARRAY, .config.array.length = CAMERA_CONTROL_KEYS_COUNT, PG_CAMERA_CONTROL_CONFIG, offsetof(cameraControlConfig_t, buttonResistanceValues) },
{ "camera_control_inverted", VAR_UINT8 | MASTER_VALUE | MODE_LOOKUP, .config.lookup = { TABLE_OFF_ON }, PG_CAMERA_CONTROL_CONFIG, offsetof(cameraControlConfig_t, inverted) },
#endif

9
src/main/drivers/camera_control.c
View file

@ -69,6 +69,11 @@ void pgResetFn_cameraControlConfig(cameraControlConfig_t *cameraControlConfig)
cameraControlConfig->internalResistance = 470;
cameraControlConfig->ioTag = timerioTagGetByUsage(TIM_USE_CAMERA_CONTROL, 0);
cameraControlConfig->inverted = 0; // Output is inverted externally
cameraControlConfig->buttonResistanceValues[CAMERA_CONTROL_KEY_ENTER] = 450;
cameraControlConfig->buttonResistanceValues[CAMERA_CONTROL_KEY_LEFT] = 270;
cameraControlConfig->buttonResistanceValues[CAMERA_CONTROL_KEY_UP] = 150;
cameraControlConfig->buttonResistanceValues[CAMERA_CONTROL_KEY_RIGHT] = 68;
cameraControlConfig->buttonResistanceValues[CAMERA_CONTROL_KEY_DOWN] = 0;
}
static struct {
@ -184,11 +189,9 @@ void cameraControlProcess(uint32_t currentTimeUs)
}
}
static const int buttonResistanceValues[] = { 45000, 27000, 15000, 6810, 0 };
static float calculateKeyPressVoltage(const cameraControlKey_e key)
{
const int buttonResistance = buttonResistanceValues[key];
const int buttonResistance = cameraControlConfig()->buttonResistanceValues[key] * 100;
return 1.0e-2f * cameraControlConfig()->refVoltage * buttonResistance / (100 * cameraControlConfig()->internalResistance + buttonResistance);
}

1
src/main/drivers/camera_control.h
View file

@ -49,6 +49,7 @@ typedef struct cameraControlConfig_s {
ioTag_t ioTag;
uint8_t inverted;
uint16_t buttonResistanceValues[CAMERA_CONTROL_KEYS_COUNT]; // resistance in 100ohm steps
} cameraControlConfig_t;
PG_DECLARE(cameraControlConfig_t, cameraControlConfig);