131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
// -------------------------------------------------- //
|
|
// This file is autogenerated by pioasm; do not edit! //
|
|
// -------------------------------------------------- //
|
|
|
|
#pragma once
|
|
|
|
#if !PICO_NO_HARDWARE
|
|
#include "hardware/pio.h"
|
|
#endif
|
|
|
|
// ------------ //
|
|
// uart_rx_mini //
|
|
// ------------ //
|
|
|
|
#define uart_rx_mini_wrap_target 0
|
|
#define uart_rx_mini_wrap 3
|
|
|
|
static const uint16_t uart_rx_mini_program_instructions[] = {
|
|
// .wrap_target
|
|
0x2020, // 0: wait 0 pin, 0
|
|
0xea27, // 1: set x, 7 [10]
|
|
0x4001, // 2: in pins, 1
|
|
0x0642, // 3: jmp x--, 2 [6]
|
|
// .wrap
|
|
};
|
|
|
|
#if !PICO_NO_HARDWARE
|
|
static const struct pio_program uart_rx_mini_program = {
|
|
.instructions = uart_rx_mini_program_instructions,
|
|
.length = 4,
|
|
.origin = -1,
|
|
};
|
|
|
|
static inline pio_sm_config uart_rx_mini_program_get_default_config(uint offset)
|
|
{
|
|
pio_sm_config c = pio_get_default_sm_config();
|
|
sm_config_set_wrap(&c, offset + uart_rx_mini_wrap_target, offset + uart_rx_mini_wrap);
|
|
return c;
|
|
}
|
|
|
|
#include "hardware/clocks.h"
|
|
#include "hardware/gpio.h"
|
|
static inline void uart_rx_mini_program_init(PIO pio, uint sm, uint offset, uint pin, uint baud)
|
|
{
|
|
pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false);
|
|
pio_gpio_init(pio, pin);
|
|
gpio_pull_up(pin);
|
|
pio_sm_config c = uart_rx_mini_program_get_default_config(offset);
|
|
sm_config_set_in_pins(&c, pin); // for WAIT, IN
|
|
// Shift to right, autopush enabled
|
|
sm_config_set_in_shift(&c, true, true, 8);
|
|
sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_RX);
|
|
// SM transmits 1 bit per 8 execution cycles.
|
|
float div = (float)clock_get_hz(clk_sys) / (8 * baud);
|
|
sm_config_set_clkdiv(&c, div);
|
|
pio_sm_init(pio, sm, offset, &c);
|
|
pio_sm_set_enabled(pio, sm, true);
|
|
}
|
|
|
|
#endif
|
|
|
|
// ------- //
|
|
// uart_rx //
|
|
// ------- //
|
|
|
|
#define uart_rx_wrap_target 0
|
|
#define uart_rx_wrap 8
|
|
|
|
static const uint16_t uart_rx_program_instructions[] = {
|
|
// .wrap_target
|
|
0x2020, // 0: wait 0 pin, 0
|
|
0xea27, // 1: set x, 7 [10]
|
|
0x4001, // 2: in pins, 1
|
|
0x0642, // 3: jmp x--, 2 [6]
|
|
0x00c8, // 4: jmp pin, 8
|
|
0xc014, // 5: irq nowait 4 rel
|
|
0x20a0, // 6: wait 1 pin, 0
|
|
0x0000, // 7: jmp 0
|
|
0x8020, // 8: push block
|
|
// .wrap
|
|
};
|
|
|
|
#if !PICO_NO_HARDWARE
|
|
static const struct pio_program uart_rx_program = {
|
|
.instructions = uart_rx_program_instructions,
|
|
.length = 9,
|
|
.origin = -1,
|
|
};
|
|
|
|
static inline pio_sm_config uart_rx_program_get_default_config(uint offset)
|
|
{
|
|
pio_sm_config c = pio_get_default_sm_config();
|
|
sm_config_set_wrap(&c, offset + uart_rx_wrap_target, offset + uart_rx_wrap);
|
|
return c;
|
|
}
|
|
|
|
static inline void uart_rx_program_init(PIO pio, uint sm, uint offset, uint pin, uint baud)
|
|
{
|
|
pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false);
|
|
pio_gpio_init(pio, pin);
|
|
gpio_pull_up(pin);
|
|
pio_sm_config c = uart_rx_program_get_default_config(offset);
|
|
sm_config_set_in_pins(&c, pin); // for WAIT, IN
|
|
sm_config_set_jmp_pin(&c, pin); // for JMP
|
|
// Shift to right, autopush disabled
|
|
sm_config_set_in_shift(&c, true, false, 32);
|
|
// Deeper FIFO as we're not doing any TX
|
|
sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_RX);
|
|
// SM transmits 1 bit per 8 execution cycles.
|
|
float div = (float)clock_get_hz(clk_sys) / (8 * baud);
|
|
sm_config_set_clkdiv(&c, div);
|
|
pio_sm_init(pio, sm, offset, &c);
|
|
pio_sm_set_enabled(pio, sm, true);
|
|
}
|
|
|
|
static inline bool uart_rx_program_available(PIO pio, uint sm)
|
|
{
|
|
return !pio_sm_is_rx_fifo_empty(pio, sm);
|
|
}
|
|
|
|
static inline char uart_rx_program_getc(PIO pio, uint sm)
|
|
{
|
|
// 8-bit read from the uppermost byte of the FIFO, as data is left-justified
|
|
io_rw_8 *rxfifo_shift = (io_rw_8 *) & pio->rxf[sm] + 3;
|
|
while (pio_sm_is_rx_fifo_empty(pio, sm))
|
|
tight_loop_contents();
|
|
return (char)*rxfifo_shift;
|
|
}
|
|
|
|
#endif
|