486 SPI Logic Analyzer with Charlieplexed Display

486 : SPI Logic Analyzer with Charlieplexed Display

Design render
  • Author: ParallelLogic-
  • Description: Displays contents of register map on charlieplexed display. Generates waveforms for PWM, UART, WS2812 in response to trigger.
  • GitHub repository
  • View in Wokwi
  • Clock: 10000000 Hz

How it works

The bi-directional pins are used to drive a charliplexed 8*7 LED display. A SPI serial connection is used to set the values in a register map. Auxilary functions are implemented, space/time permitting, ex: LFSR, PWM, freqency counting, ultrasonic distance sensing

How to test

Use SPI to read/write values to the register map, observe the output on the LEDs and/or in the serial response. CS active low SPI MODE 0 SPI_CLK <= SYS_CLK/2 Most signigicant bit is exchanged first

External hardware

Charlielexed 7*8 LED display

IO

#InputOutputBidirectional
0CSASIC_OUT_0MAT0
1SCLKASIC_OUT_1MAT1
2MOSIASIC_OUT_2MAT2
3TRIGGERASIC_OUT_3MAT3
4ASIC_IN_0ASIC_OUT_4MAT4
5ASIC_IN_1ASIC_OUT_5MAT5
6ASIC_IN_2ASIC_OUT_6MAT6
7ASIC_IN_3MISOMAT7

Chip location

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tt_um_b_10_array_multiplier (Lab B Group 10 Array Multiplier) tt_um_urish_giant_ringosc (Giant Ring Oscillator (3853 inverters)) tt_um_htfab_caterpillar (Simon's Caterpillar) tt_um_anders_tt_6502 (tt6502) tt_um_wokwi_414123795172381697 (TinySnake) tt_um_oscillating_bones (Oscillating Bones) tt_um_r2r_dac (4-bit R2R DAC) tt_um_tinytinfoil_saradc_dac (Noise test for a CDAC capacitor chain) tt_um_purdue_socet_uart (SoCET UART) tt_um_rejunity_sn76489 (Classic 8-bit era Programmable Sound Generator SN76489) tt_um_rejunity_ay8913 (Classic 8-bit era Programmable Sound Generator AY-3-8913) tt_um_tommythorn_cgates (Cgates) tt_um_09eksdee (eksdee) tt_um_13hihi31_tdc (Time to Digital Converter) tt_um_rejunity_decoder (ternary, E1M0, E2M0 decoders) tt_um_analog_example (Digital OTA) tt_um_kailinsley (Dynamic Threshold Leaky Integrate-and-Fire) tt_um_C6_array_multiplier (tt09-C6-array-multiplier) 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_wokwi_414041465275103233 (SK Test Workshop) tt_um_rejunity_vga_logo (VGA Tiny Logo (1 tile)) tt_um_toivoh_demo (Sequential Shadows [TT08 demo competition]) tt_um_liaf (A simple leaky integrate and fire neuron) tt_um_wokwi_413879612498222081 (Clocked Display) tt_um_wokwi_413919625901452289 (Encoder) tt_um_wokwi_413919442353385473 (Encoder) tt_um_wokwi_413919540668975105 (First Tapeout Chip - OCR) tt_um_wokwi_413918022277139457 (Half Adder) tt_um_wokwi_414120435095328769 (Kai's Death Adder) tt_um_wokwi_413919775044656129 (Kevin Project) tt_um_lif_network_MR (Leaky Neuron Network) tt_um_lsnn_hschweig (Neuromorphic Hardware for SNN LSTM) tt_um_wokwi_413387065963362305 (Project) tt_um_Nishanth_RISCV (RISCV Processor Design) tt_um_wokwi_413883347321632769 (Test_project) tt_um_KoushikCSN_RISCV (RISCV Processor Design) tt_um_wokwi_414120868401584129 (Tian TT9) tt_um_wokwi_414120391864616961 (Tiniest of tapeouts) tt_um_wokwi_414120458938907649 (Who knows what's happening Tiny Tapeout) tt_um_wokwi_413919833599252481 (YoshiTP) tt_um_wokwi_414118269335820289 (chip_fab) tt_um_wokwi_414121281003682817 (dummy) tt_um_wokwi_414124471705253889 (sarah's first chip) tt_um_ccu_goatgate (tiny cipher 4 bit key) tt_um_wokwi_414120526876163073 (2 input multiplexor) tt_um_lif_ZB (Tutorial: Simple LIF Neuron) Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available