Code formatted
This commit is contained in:
Kai Lauterbach
parent
c3b0d8bf26
commit
1a54d4bc59
2 changed files with 251 additions and 200 deletions
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@ -1,12 +1,14 @@
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void peak_mean(uint16_t *i2s_buffer, uint32_t len, float * max_value, float * min_value, float *pt_mean) {
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void peak_mean(uint16_t *i2s_buffer, uint32_t len, float *max_value, float *min_value, float *pt_mean)
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{
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max_value[0] = i2s_buffer[0];
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min_value[0] = i2s_buffer[0];
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mean_filter filter(5);
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filter.init(i2s_buffer[0]);
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float mean = 0;
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for (uint32_t i = 1; i < len; i++) {
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for (uint32_t i = 1; i < len; i++)
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{
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float value = filter.filter((float)i2s_buffer[i]);
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if (value > max_value[0])
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@ -21,25 +23,30 @@ void peak_mean(uint16_t *i2s_buffer, uint32_t len, float * max_value, float * mi
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pt_mean[0] = mean;
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}
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// true if digital/ false if analog
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bool digital_analog(uint16_t *i2s_buffer, uint32_t max_v, uint32_t min_v) {
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bool digital_analog(uint16_t *i2s_buffer, uint32_t max_v, uint32_t min_v)
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{
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uint32_t upper_threshold = max_v - 0.05 * (max_v - min_v);
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uint32_t lower_threshold = min_v + 0.05 * (max_v - min_v);
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uint32_t digital_data = 0;
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uint32_t analog_data = 0;
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for (uint32_t i = 0; i < BUFF_SIZE; i++) {
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if (i2s_buffer[i] > lower_threshold) {
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if (i2s_buffer[i] > upper_threshold) {
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for (uint32_t i = 0; i < BUFF_SIZE; i++)
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{
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if (i2s_buffer[i] > lower_threshold)
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{
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if (i2s_buffer[i] > upper_threshold)
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{
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// HIGH DIGITAL
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digital_data++;
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}
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else {
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else
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{
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// ANALOG/TRANSITION
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analog_data++;
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}
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}
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else {
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else
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{
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// LOW DIGITAL
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digital_data++;
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}
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@ -60,7 +67,8 @@ void trigger_freq_analog(uint16_t *i2s_buffer,
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float *pt_freq,
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float *pt_period,
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uint32_t *pt_trigger0,
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uint32_t *pt_trigger1) {
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uint32_t *pt_trigger1)
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{
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float freq = 0;
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float period = 0;
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bool signal_side = false;
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@ -70,20 +78,24 @@ void trigger_freq_analog(uint16_t *i2s_buffer,
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uint32_t trigger_index = 0;
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// get initial signal relative to the mean
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if (to_voltage(i2s_buffer[0]) > mean) {
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if (to_voltage(i2s_buffer[0]) > mean)
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{
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signal_side = true;
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}
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// waveform repetitions calculation + get triggers time
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uint32_t wave_center = (max_v + min_v) / 2;
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for (uint32_t i = 1 ; i < BUFF_SIZE; i++) {
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if (signal_side && i2s_buffer[i] < wave_center - (wave_center - min_v) * 0.2) {
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for (uint32_t i = 1; i < BUFF_SIZE; i++)
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{
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if (signal_side && i2s_buffer[i] < wave_center - (wave_center - min_v) * 0.2)
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{
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signal_side = false;
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}
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else if (!signal_side && i2s_buffer[i] > wave_center + (max_v - wave_center) * 0.2) {
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else if (!signal_side && i2s_buffer[i] > wave_center + (max_v - wave_center) * 0.2)
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{
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freq++;
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if (trigger_count < trigger_num) {
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if (trigger_count < trigger_num)
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{
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trigger_temp[trigger_count] = i;
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trigger_count++;
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}
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@ -92,22 +104,26 @@ void trigger_freq_analog(uint16_t *i2s_buffer,
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}
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// frequency calculation
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if (trigger_count < 2) {
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if (trigger_count < 2)
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{
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trigger_temp[0] = 0;
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trigger_index = 0;
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freq = 0;
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period = 0;
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}
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else {
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else
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{
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// simple frequency calculation fair enough for frequencies over 2khz (20hz resolution)
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freq = freq * 1000 / 50;
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period = (float)(sample_rate * 1000.0) / freq; // us
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// from 2000 to 80 hz -> uses mean of the periods for precision
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if (freq < 2000 && freq > 80) {
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if (freq < 2000 && freq > 80)
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{
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period = 0;
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for (uint32_t i = 1; i < trigger_count; i++) {
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for (uint32_t i = 1; i < trigger_count; i++)
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{
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period += trigger_temp[i] - trigger_temp[i - 1];
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}
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period /= (trigger_count - 1);
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@ -115,7 +131,8 @@ void trigger_freq_analog(uint16_t *i2s_buffer,
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}
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// under 80hz, single period for frequency calculation
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else if (trigger_count > 1 && freq <= 80) {
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else if (trigger_count > 1 && freq <= 80)
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{
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period = trigger_temp[1] - trigger_temp[0];
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freq = sample_rate * 1000 / period;
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}
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@ -128,25 +145,24 @@ void trigger_freq_analog(uint16_t *i2s_buffer,
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The resulting trigger gets a negative offset of 5% of the calculated period
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*/
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uint32_t trigger2 = 0;
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if (trigger_temp[0] - period * 0.05 > 0 && trigger_count > 1) {
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if (trigger_temp[0] - period * 0.05 > 0 && trigger_count > 1)
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{
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trigger_index = trigger_temp[0] - period * 0.05;
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trigger2 = trigger_temp[1] - period * 0.05;
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}
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else if (trigger_count > 2) {
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else if (trigger_count > 2)
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{
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trigger_index = trigger_temp[1] - period * 0.05;
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if (trigger_count > 2)
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trigger2 = trigger_temp[2] - period * 0.05;
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}
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pt_trigger0[0] = trigger_index;
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pt_trigger1[0] = trigger2;
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pt_freq[0] = freq;
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pt_period[0] = period;
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}
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void trigger_freq_digital(uint16_t *i2s_buffer,
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float sample_rate,
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float mean,
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@ -154,7 +170,8 @@ void trigger_freq_digital(uint16_t *i2s_buffer,
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uint32_t min_v,
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float *pt_freq,
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float *pt_period,
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uint32_t *pt_trigger0) {
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uint32_t *pt_trigger0)
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{
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float freq = 0;
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float period = 0;
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@ -165,31 +182,37 @@ void trigger_freq_digital(uint16_t *i2s_buffer,
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uint32_t trigger_index = 0;
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// get initial signal relative to the mean
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if (to_voltage(i2s_buffer[0]) > mean) {
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if (to_voltage(i2s_buffer[0]) > mean)
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{
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signal_side = true;
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}
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// waveform repetitions calculation + get triggers time
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uint32_t wave_center = (max_v + min_v) / 2;
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bool normal_high = (mean > to_voltage(wave_center)) ? true : false;
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if (max_v - min_v > 4095 * (0.4 / 3.3)) {
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for (uint32_t i = 1 ; i < BUFF_SIZE; i++) {
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if (signal_side && i2s_buffer[i] < wave_center - (wave_center - min_v) * 0.2) {
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if (max_v - min_v > 4095 * (0.4 / 3.3))
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{
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for (uint32_t i = 1; i < BUFF_SIZE; i++)
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{
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if (signal_side && i2s_buffer[i] < wave_center - (wave_center - min_v) * 0.2)
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{
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// signal was high, fell -> trigger if normal high
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if (trigger_count < trigger_num && normal_high) {
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if (trigger_count < trigger_num && normal_high)
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{
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trigger_temp[trigger_count] = i;
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trigger_count++;
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}
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signal_side = false;
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}
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else if (!signal_side && i2s_buffer[i] > wave_center + (max_v - wave_center) * 0.2) {
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else if (!signal_side && i2s_buffer[i] > wave_center + (max_v - wave_center) * 0.2)
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{
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freq++;
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// signal was low, rose -> trigger if normal low
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if (trigger_count < trigger_num && !normal_high) {
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if (trigger_count < trigger_num && !normal_high)
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{
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trigger_temp[trigger_count] = i;
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trigger_count++;
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}
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@ -201,11 +224,14 @@ void trigger_freq_digital(uint16_t *i2s_buffer,
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freq = freq * 1000 / 50;
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period = (float)(sample_rate * 1000.0) / freq; // us
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if (trigger_count > 1) {
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if (trigger_count > 1)
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{
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// from 2000 to 80 hz -> uses mean of the periods for precision
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if (freq < 2000 && freq > 80) {
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if (freq < 2000 && freq > 80)
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{
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period = 0;
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for (uint32_t i = 1; i < trigger_count; i++) {
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for (uint32_t i = 1; i < trigger_count; i++)
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{
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period += trigger_temp[i] - trigger_temp[i - 1];
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}
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period /= (trigger_count - 1);
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@ -213,7 +239,8 @@ void trigger_freq_digital(uint16_t *i2s_buffer,
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}
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// under 80hz, single period for frequency calculation
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else if (trigger_count > 1 && freq <= 80) {
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else if (trigger_count > 1 && freq <= 80)
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{
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period = trigger_temp[1] - trigger_temp[0];
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freq = sample_rate * 1000 / period;
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}
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@ -227,11 +254,7 @@ void trigger_freq_digital(uint16_t *i2s_buffer,
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trigger_index = 0;
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}
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pt_trigger0[0] = trigger_index;
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pt_freq[0] = freq;
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pt_period[0] = period;
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}
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@ -34,26 +34,33 @@ void menu_handler() {
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button();
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}
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void button() {
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void button()
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{
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if (btnok == 1 || btnbk == 1 || btnpl == 1 || btnmn == 1)
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{
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menu_action = true;
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}
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if (menu == true)
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{
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if (set_value) {
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switch (opt) {
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if (set_value)
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{
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switch (opt)
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{
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case Vdiv:
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if (btnpl == 1) {
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if (btnpl == 1)
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{
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volts_index++;
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if (volts_index >= sizeof(voltage_division) / sizeof(*voltage_division)) {
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if (volts_index >= sizeof(voltage_division) / sizeof(*voltage_division))
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{
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volts_index = 0;
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}
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btnpl = 0;
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}
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else if (btnmn == 1) {
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else if (btnmn == 1)
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{
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volts_index--;
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if (volts_index < 0) {
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if (volts_index < 0)
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{
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volts_index = sizeof(voltage_division) / sizeof(*voltage_division) - 1;
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}
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btnmn = 0;
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@ -63,16 +70,20 @@ void button() {
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break;
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case Sdiv:
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if (btnmn == 1) {
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if (btnmn == 1)
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{
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tscale_index++;
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if (tscale_index >= sizeof(time_division) / sizeof(*time_division)) {
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if (tscale_index >= sizeof(time_division) / sizeof(*time_division))
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{
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tscale_index = 0;
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}
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btnmn = 0;
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}
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else if (btnpl == 1) {
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else if (btnpl == 1)
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{
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tscale_index--;
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if (tscale_index < 0) {
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if (tscale_index < 0)
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{
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tscale_index = sizeof(time_division) / sizeof(*time_division) - 1;
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}
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btnpl = 0;
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@ -82,11 +93,13 @@ void button() {
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break;
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case Offset:
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if (btnmn == 1) {
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if (btnmn == 1)
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{
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offset += 0.1 * (v_div * 4) / 3300;
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btnmn = 0;
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}
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else if (btnpl == 1) {
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else if (btnpl == 1)
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{
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offset -= 0.1 * (v_div * 4) / 3300;
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btnpl = 0;
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}
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@ -114,7 +127,6 @@ void button() {
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default:
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break;
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}
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if (btnbk == 1)
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{
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@ -151,8 +163,10 @@ void button() {
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hide_menu();
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btnbk = 0;
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}
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if (btnok == 1) {
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switch (opt) {
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if (btnok == 1)
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{
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switch (opt)
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{
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case Autoscale:
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auto_scale = !auto_scale;
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break;
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@ -211,7 +225,6 @@ void button() {
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default:
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break;
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}
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btnok = 0;
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@ -238,71 +251,86 @@ void button() {
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}
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btnbk = 0;
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}
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if (btnpl == 1) {
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if (btnpl == 1)
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{
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volts_index++;
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if (volts_index >= sizeof(voltage_division) / sizeof(*voltage_division)) {
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if (volts_index >= sizeof(voltage_division) / sizeof(*voltage_division))
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{
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volts_index = 0;
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}
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btnpl = 0;
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v_div = voltage_division[volts_index];
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}
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if (btnmn == 1) {
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if (btnmn == 1)
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{
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tscale_index++;
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if (tscale_index >= sizeof(time_division) / sizeof(*time_division)) {
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if (tscale_index >= sizeof(time_division) / sizeof(*time_division))
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{
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tscale_index = 0;
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}
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btnmn = 0;
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s_div = time_division[tscale_index];
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}
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}
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}
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void hide_menu() {
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void hide_menu()
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{
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menu = false;
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}
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void hide_all() {
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void hide_all()
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{
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menu = false;
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info = false;
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}
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void show_menu() {
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void show_menu()
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{
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menu = true;
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}
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String strings_vdiv() {
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String strings_vdiv()
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{
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return "";
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}
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String strings_sdiv() {
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String strings_sdiv()
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{
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return "";
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}
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String strings_offset() {
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String strings_offset()
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{
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return "";
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}
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String strings_toffset() {
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String strings_toffset()
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{
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return "";
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}
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String strings_freq() {
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String strings_freq()
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{
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return "";
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}
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String strings_peak() {
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String strings_peak()
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{
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return "";
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}
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String strings_vmax() {
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String strings_vmax()
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{
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return "";
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}
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String strings_vmin() {
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String strings_vmin()
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{
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return "";
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}
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String strings_filter() {
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String strings_filter()
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{
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return "";
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}
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