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-rw-r--r--hid/pico/src/ph_ps2.pio86
1 files changed, 0 insertions, 86 deletions
diff --git a/hid/pico/src/ph_ps2.pio b/hid/pico/src/ph_ps2.pio
deleted file mode 100644
index 2313419d..00000000
--- a/hid/pico/src/ph_ps2.pio
+++ /dev/null
@@ -1,86 +0,0 @@
-;
-; Copyright (c) 2022 No0ne (https://github.com/No0ne)
-; (c) 2023 Dustin Hoffman
-;
-; SPDX-License-Identifier: MIT
-;
-
-.program ps2device
-.side_set 1 opt pindirs
-
- //mov y ! null
-start:
-.wrap_target
- set pindirs 0 side 0 // Clock and data to input mode.
- jmp pin sendcheck // If clock is high, see if we have data to send.
- // Clock is being pulled low.
- wait 1 pin 1 // Wait for clock to be pulled high.
-
- // We are not sending, look for a start bit (Clock high, data low)
- in pins 1 // Read in from data.
- mov x isr // Move what we read to x.
- mov isr null // Clear ISR.
- jmp !x receive // If x is low, start the receive process.
- jmp start // Not receiving, restart.
-
-receive:
- set pindirs, 1 [6] // Clock low.
- set x, 8 // Set loop counter.
-
-receiveloop:
- set pindirs, 0 [6]// Clock high
- in pins, 1 [4]// Read a bit into ISR.
- set pindirs, 1 [6]// Clock low
- jmp x-- receiveloop [4]// Iterate
- set pindirs, 0 [6] // Clock high
- nop side 1 [6]// Data low
- set pindirs, 1 [7] // Clock low
- //in null 1
-.wrap
-
-sendcheck:
- jmp !osre wait_to_write // See if we have data to send.
- jmp start // No data to send, restart.
-
-wait_to_write:
- set x 10 // Number of bits to write out.
-
- sendloop:
- set pindirs, 0 [6] // Clock set to input (high)
- jmp pin sendcontinue // If clock is high, host is still receiving data.
- // Pin was low, host wants to send data.
- // Notify of failure to send data..
- //in null 8
- //in y 2
- jmp start
-sendcontinue:
- out pindirs, 1 [6] // Write out data.
- set pindirs, 1 [6] // Set clock low.
- jmp x-- sendloop [6]
- //in y 10
- jmp start
-
-% c-sdk {
-
- void ps2device_program_init(PIO pio, uint sm, uint offset, uint dat) {
- pio_sm_config c = ps2device_program_get_default_config(offset);
-
- uint clk = dat + 1;
- pio_gpio_init(pio, clk);
- pio_gpio_init(pio, dat);
-
- // Use a frequency high enough to effectivly sample clock and data.
- sm_config_set_clkdiv(&c, 427); // 2560 is 20 us, 640 is 5 us, 427 is 3.3333 us
- sm_config_set_jmp_pin(&c, clk);
- sm_config_set_set_pins(&c, clk, 1);
- sm_config_set_sideset_pins(&c, dat);
- sm_config_set_out_pins(&c, dat, 1);
- sm_config_set_out_shift(&c, true, true, 11);
- sm_config_set_in_pins(&c, dat);
- sm_config_set_in_shift(&c, true, true, 9);
-
- pio_sm_init(pio, sm, offset, &c);
- pio_sm_set_enabled(pio, sm, true);
- }
-
-%} \ No newline at end of file