// -------------------------------------------------- // // 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