389 TT10 HPDL 1414 Uart

389 : TT10 HPDL 1414 Uart

Design render

How it works

This project is a compact UART transceiver with an integrated display update mechanism. It operates at 115200 baud and stores received data in a 16-byte internal buffer. The data is asynchronously transferred to four HPDL-1414 alphanumeric LED modules. When new characters arrive and the buffer is full, the existing characters shift left to make space. A blinking cursor indicates the current input position, and backspace (Ctrl-H) is supported for navigating back and editing.

How to test

  1. Connect the UART interface to a computer or microcontroller configured at 115200 baud.
  2. Send ASCII characters over the UART interface.
  3. Observe the received characters displayed on the HPDL-1414 modules.
  4. Test the character shifting behavior by exceeding 16 characters.
  5. Use Ctrl-H to test the backspace functionality.

External hardware

HPDL-1414 Pmod module https://github.com/ADDTDR/HPDL-1414-Pmod-Module

hpdl-1414 pmod

Signal test

alt text

IO

#InputOutputBidirectional
0HPDL_D0HPDL_A0
1HPDL_D1HPDL_A1
2HPDL_D2HPDL_WR1
3HPDL_D3HPDL_WR2
4HPDL_D4HPDL_WR3
5HPDL_D5HPDL_WR4
6HPDL_D6UART_TX
7UART_RX

Chip location

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Sound Generator AY-3-8913) tt_um_tommythorn_cgates (Cgates) tt_um_09eksdee (eksdee) tt_um_rejunity_decoder (ternary, E1M0, E2M0 decoders) tt_um_kailinsley (Dynamic Threshold Leaky Integrate-and-Fire) tt_um_rejunity_vga_test01 (VGA Drop (audio/visual demo)) tt_um_wallento_4bit_toycpu (4-Bit Toy CPU) tt_um_warp (Warp) tt_um_algofoogle_tt09_ring_osc3 (Verilog ring oscillator V3) tt_um_kev_ma_matmult222 (2-bit 2x2 Matrix Multiplier) tt_um_rejunity_vga_logo (VGA Tiny Logo (1 tile)) tt_um_liaf (A simple leaky integrate and fire neuron) tt_um_lif_network_MR (Leaky Neuron Network) tt_um_lsnn_hschweig (Neuromorphic Hardware for SNN LSTM) tt_um_Nishanth_RISCV (RISCV Processor Design) tt_um_KoushikCSN_RISCV (RISCV Processor Design) tt_um_ccu_goatgate (tiny cipher 4 bit key) tt_um_lif_ZB (Tutorial: Simple LIF Neuron) tt_um_z2a_rgb_mixer (RGB Mixer demo) tt_um_vga_clock (VGA clock) tt_um_synth_simple_mm (synth_simple) tt_um_gus16 (GUS16 CPU) tt_um_rejunity_ternary_dot (Ternary 128-element Dot 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