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直接在C语言中定义pio汇编二进制常量数组，免去用ASM汇编器自动生成 xxx.pio.h 文件。
2022-11-27 V1.1 升级更新
pio_asm_def.h
(4.63 KB, 下载次数: 34)
2022-03-17 V1.0 初版
pio_asm_def.h
(3.68 KB, 下载次数: 20)
blink.c
(2.47 KB, 下载次数: 30)
范例: 闪烁3个引脚
blink.c :
[C] 纯文本查看 复制代码 #include "pio_asm_def.h"
#define blink_wrap_target 2
#define blink_wrap 7
static const uint16_t blink_program_instructions[] = {
// 0x80a0, 0: pull block
C_PULL | PULL_BLOCK,
// 0x6040, 1: out y, 32
C_OUT | OUT_SRC_Y | BIT_COUNT_32,
// .wrap_target
// 0xa022, 2: mov x, y
C_MOV | MOV_DEST_X | MOV_SRC_Y,
// 0xe001, 3: set pins, 1
C_SET | SET_DEST_PINS | 1,
// 0x0044, 4: jmp x--, 4
C_JMP | IF_X_DEC_EQU_1 | 4,
// 0xa022, 5: mov x, y
C_MOV | MOV_DEST_X | MOV_SRC_Y,
// 0xe000, 6: set pins, 0
C_SET | SET_DEST_PINS | 0,
// 0x0047, 7: jmp x--, 7
C_JMP | IF_X_DEC_EQU_1 | 7
// .wrap
};
static const struct pio_program blink_program = {
.instructions = blink_program_instructions,
.length = 8,
.origin = -1,
};
static inline pio_sm_config blink_program_get_default_config(uint offset) {
pio_sm_config c = pio_get_default_sm_config();
sm_config_set_wrap(&c, offset + blink_wrap_target, offset + blink_wrap);
return c;
}
// this is a raw helper function for use by the user which sets up the GPIO output, and configures the SM to output on a particular pin
void blink_program_init(PIO pio, uint sm, uint offset, uint pin) {
pio_gpio_init(pio, pin);
pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true);
pio_sm_config c = blink_program_get_default_config(offset);
sm_config_set_set_pins(&c, pin, 1);
pio_sm_init(pio, sm, offset, &c);
}
void blink_pin_forever(PIO pio, uint sm, uint offset, uint pin, uint freq);
int TestPioMain() {
setup_default_uart();
// todo get free sm
PIO pio = pio0;
uint offset = pio_add_program(pio, &blink_program);
printf("Loaded program at %d\n", offset);
blink_pin_forever(pio, 0, offset, 0, 3);
blink_pin_forever(pio, 1, offset, 6, 4);
blink_pin_forever(pio, 2, offset, 11, 1);
}
void blink_pin_forever(PIO pio, uint sm, uint offset, uint pin, uint freq) {
blink_program_init(pio, sm, offset, pin);
pio_sm_set_enabled(pio, sm, true);
pio->txf[sm] = clock_get_hz(clk_sys) / (2 * freq);
}
pio_asm_def.h:[Lua] 纯文本查看 复制代码 /*
*********************************************************************************************************
*
* 模块名称 : RP2040 PIO指令代码定义
* 文件名称 : pio_asm_def.h
* 版 本 : V1.1
* 说 明 : 用C语言宏直接构建PIO指令二进制代码
* 修改记录 :
* 版本号 日期 作者 说明
* V1.0 2022-03-19 armfly 正式发布
* V1.1 2022-11-27 armfly 修改几个bug：
* - MOV_OP_INVERT, SET_DEST_PINS, SET_DEST_X,SET_DEST_Y
* - SET_DEST_PINDIRS, MOV_OP_INVERT
* - 新增 SIDE_SET(x), IRQ_SET
* - 更名 IF_X_DEC_EQU_1 -> IF_X_DEC_NONE_ZERO
* - 更名 IF_Y_DEC_EQU_1 -> IF_Y_DEC_NONE_ZERO
*
* Copyright (C), 2022-2030, 安富莱电子 [url]www.anfulai.cn[/url]、[url]www.armbbs.cn[/url]
*
*********************************************************************************************************
*/
#ifndef _PIO_ASM_DEF_H
#define _PIO_ASM_DEF_H
#define C_JMP (0 << 13)
enum IFEnum
{
IF_X_EQU_0 = (1 << 5),
IF_X_DEC_NONE_ZERO = (2 << 5),
IF_Y_EQU_0 = (3 << 5),
IF_Y_DEC_NONE_ZERO = (4 << 5),
IF_X_NOT_EQU_Y = (5 << 5),
IF_PIN = (6 << 5),
IF_OSR_NOT_EMPTY = (7 << 5)
};
enum TAREnum
{
TAR_0, TAR_1, TAR_2, TAR_3, TAR_4, TAR_5, TAR_6, TAR_7,
TAR_8, TAR_9, TAR_10, TAR_11, TAR_12, TAR_13, TAR_14, TAR_15,
TAR_16, TAR_17, TAR_18, TAR_19, TAR_20, TAR_21, TAR_22, TAR_23,
TAR_24, TAR_25, TAR_26, TAR_27, TAR_28, TAR_29, TAR_30, TAR_31
};
#define C_WAIT (1 << 13)
enum WaitForEnum
{
WAIT_FOR_0 = (0 << 7),
WAIT_FOR_1 = (1 << 7)
};
enum WaitSrcEnum
{
WAIT_SRC_GPIO = (0 << 5),
WAIT_SRC_PIN = (1 << 5),
WAIT_SRC_IRQ = (2 << 5),
};
#define C_IN (2 << 13)
enum InSrcEnum
{
IN_SRC_PINS = (0 << 5),
IN_SRC_X = (1 << 5),
IN_SRC_Y = (2 << 5),
IN_SRC_NULL = (3 << 5),
IN_SRC_ISR = (6 << 5),
IN_SRC_OSR = (7 << 5),
};
#define C_OUT (3 << 13)
enum OutDestEnum
{
OUT_DEST_PINS = (0 << 5),
OUT_DEST_X = (1 << 5),
OUT_DEST_Y = (2 << 5),
OUT_DEST_NULL = (3 << 5),
OUT_DEST_PINDIRS = (4 << 5),
OUT_DEST_PC = (5 << 5),
OUT_DEST_ISR = (6 << 5),
OUT_DEST_EXEC = (7 << 5),
};
enum
{
BIT_COUNT_32 = 0,
BIT_COUNT_1, BIT_COUNT_2, BIT_COUNT_3, BIT_COUNT_4,
BIT_COUNT_5, BIT_COUNT_6, BIT_COUNT_7, BIT_COUNT_8,
BIT_COUNT_9, BIT_COUNT_10, BIT_COUNT_11, BIT_COUNT_12,
BIT_COUNT_13, BIT_COUNT_14, BIT_COUNT_15, BIT_COUNT_16,
BIT_COUNT_17, BIT_COUNT_18, BIT_COUNT_19, BIT_COUNT_20,
BIT_COUNT_21, BIT_COUNT_22, BIT_COUNT_23, BIT_COUNT_24,
BIT_COUNT_25, BIT_COUNT_26, BIT_COUNT_27, BIT_COUNT_28,
BIT_COUNT_29, BIT_COUNT_30, BIT_COUNT_31,
};
#define C_PUSH (4 << 13)
enum
{
IF_FULL = (1 << 6),
PUSH_BLOCK = (1 << 5),
};
#define C_PULL ((4 << 13) | (1 << 7))
enum
{
IF_EMPTY = (1 << 6),
PULL_BLOCK = (1 << 5),
};
#define C_MOV (5 << 13)
enum
{
MOV_DEST_PINS = (0 << 5),
MOV_DEST_X = (1 << 5),
MOV_DEST_Y = (2 << 5),
MOV_DEST_EXEC = (4 << 5),
MOV_DEST_PC = (5 << 5),
MOV_DEST_ISR = (6 << 5),
MOV_DEST_OSR = (7 << 5),
};
enum
{
MOV_OP_NONE = (0 << 3),
MOV_OP_INVERT = (1 << 3),
};
enum
{
MOV_SRC_PINS = (0 << 0),
MOV_SRC_X = (1 << 0),
MOV_SRC_Y = (2 << 0),
MOV_SRC_NULL = (3 << 0),
MOV_SRC_STATUS = (5 << 0),
MOV_SRC_ISR = (6 << 0),
MOV_SRC_OSR = (7 << 0),
};
#define C_IRQ (6 << 13)
enum
{
IRQ_SET = (0 << 6),
IRQ_CLEAR = (1 << 6),
IRQ_WAIT = (1 << 5),
};
#define C_SET (7 << 13)
enum
{
SET_DEST_PINS = (0 << 5),
SET_DEST_X = (1 << 5),
SET_DEST_Y = (2 << 5),
SET_DEST_PINDIRS = (4 << 5),
};
#endif
/* 侧集指令 Delay/side-set 5 bits */
#define SIDE_SET(x) (x << 8)
/****************************** END ***************************************************/
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发表于 2022-3-17 18:08:05
发表于 2022-10-27 18:02:36
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