Streaming Waveforms over USART2 to SerialChart

What I checked first

Using the ADC/UART note, I retraced HAL_ADC_Start, PollForConversion, GetValue, and USART2 transmission. The saved SerialChart configuration uses COM6, 115200 baud, and fields spanning 0-3.3 V and 0-4096 ADC counts.

Source view

• The line format separates sample index, timestamp, raw ADC, moving average, and filtered voltage.
• Each sample ends with CRLF so SerialChart can keep reading consistent fields.
• The illuminated LED confirms power/status only; it is not proof of waveform quality.

Code path

sprintf((char *)TxData,
        "%lu,%lu,%lu,%lu,%.6f\r\n",
        sample_index, timestamp_us,
        ADCValue, Smooth_ECG, ECG_Filtered);
HAL_UART_Transmit(&huart2, TxData, strlen((char *)TxData), 10);

Key terms

1. USART2
2. 115200 baud
3. CSV framing
4. SerialChart

Review sequence

1. USART2
2. 115200 baud → CSV framing
3. SerialChart