From 40c7bf62584f930f1dd8e42534de1165bdef3c04 Mon Sep 17 00:00:00 2001
From: zhji <jzhgonha@163.com>
Date: Sun, 16 Mar 2025 17:27:38 +0800
Subject: [PATCH] [feat] add rmii and dma demo

---
 main.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 92 insertions(+), 6 deletions(-)

diff --git a/main.c b/main.c
index 2f26b31..a0f37de 100644
--- a/main.c
+++ b/main.c
@@ -3,9 +3,19 @@
 #include "clock.h"
 #include "sio.h"
 #include "gpio.h"
+#include "dma.h"
+#include "pio_rmii_tx.h"
 #include "RP2040.h"
 #include "main_core0.h"
 #include "main_core1.h"
+#include "udp.h"
+
+#define STR_MAC_SRC  "11:22:33:44:55:66"
+#define STR_MAC_DST  "1C:1B:0D:2E:A9:99"
+#define STR_IP_SRC   "192.168.2.219"
+#define STR_IP_DST   "192.168.2.24"
+#define STR_PORT_SRC "40103"
+#define STR_PORT_DST "40103"
 
 struct gpio_cfg_s gpio_led_cfg = {
     .pin = 25,
@@ -66,20 +76,96 @@ void main_core1(void)
 
 extern uint32_t _vector;
 extern uint32_t _stack_top_core1;
+
+struct pio_rmii_tx_s rmii = {
+    .clkdiv = 2,
+    .sm = 0,
+    .addr = 0,
+    .flag = 0,
+    .pin = 12, /* increase order of pin CLK-EN-D0-D1 */
+};
+
+struct udp_cfg_s udp_cfg = {
+    .mac_src = STR_MAC_SRC,
+    .mac_dst = STR_MAC_DST,
+    .ip_src = STR_IP_SRC,
+    .ip_dst = STR_IP_DST,
+    .port_src = STR_PORT_SRC,
+    .port_dst = STR_PORT_DST,
+};
+
+struct udp_header_s udp_default;
+uint32_t buffer[512];
+uint32_t *data;
+uint16_t length;
+
+uint8_t dma_buffer_raw[] = { 0x55, 0xD5, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE };
+uint8_t dma_buffer_calc[20];
+struct dma_cfg_s dma_cfg = {
+    .read_addr = (uint32_t)dma_buffer_raw,
+    .write_addr = (uint32_t)dma_buffer_calc,
+    .trans_count = sizeof(dma_buffer_raw) / 4,
+    .channel = DMA_CHANNEL_0,
+    .request = DMA_REQ_FOREVER,
+    .data_size = DMA_DATA_SIZE_32BIT,
+    .incr_read = ENABLE,
+    .incr_write = ENABLE,
+    .irq_quiet = DISABLE,
+    .byte_swap = DISABLE,
+    .chain_to = DMA_CHANNEL_0,
+    .high_priority = DISABLE,
+    .ring_sel_write = DISABLE,
+    .ring_size = DMA_RING_SIZE_NONE,
+    .sniff_en = ENABLE,
+};
+struct dma_sniff_cfg_s sniff_cfg = {
+    .channel = DMA_CHANNEL_0,
+    .calc = DMA_SNIFF_CALC_CRC32_BITREV,
+    .byte_swap = DISABLE,
+    .out_rev = ENABLE,
+    .out_inv = ENABLE,
+};
+
 int main(void)
 {
     reset_disable(RESET_IO_BANK0 | RESET_PADS_BANK0);
+    reset_disable(RESET_PIO0);
     gpio_init(&gpio_led_cfg);
+    gpio_init_simple(rmii.pin, GPIO_FUNC_PIO0, DISABLE, DISABLE);
+    gpio_init_simple(rmii.pin + 1, GPIO_FUNC_PIO0, DISABLE, DISABLE);
+    gpio_init_simple(rmii.pin + 2, GPIO_FUNC_PIO0, DISABLE, DISABLE);
+    gpio_init_simple(rmii.pin + 3, GPIO_FUNC_PIO0, DISABLE, DISABLE);
+    if (udp_create_default(&udp_cfg, &udp_default)) {
+        while (1);
+    }
+    data = udp_copy_header(buffer, &udp_default);
+    for (uint32_t i = 0; i < 16; i++) {
+        data[i] = (i << 24) | (i << 16) | (i << 8) | i;
+    }
+    length = udp_pack_data((struct udp_header_s *)buffer, 16);
 
-    system_reset(SYSTEM_BLOCK_PROC1);
-    sio_launch_core1(main_core1,&_stack_top_core1, _vector);
+    // system_reset(SYSTEM_BLOCK_PROC1);
+    // sio_launch_core1(main_core1, &_stack_top_core1, _vector);
+
+    dma_int_clear_raw_status(1 << DMA_CHANNEL_0);
+    dma_init(&dma_cfg);
+    dma_sniff_init(&sniff_cfg);
+    dma_sniff_write(0xA3123859);
+    dma_sniff_enable();
+    dma_enable_and_trig(dma_cfg.channel);
+    while (!(dma_int_get_raw_status() & (1 << dma_cfg.channel)));
 
     __enable_irq();
-
+    pio_rmii_tx_init(&rmii);
     while (1) {
-        static uint32_t tick_cnt = 0;
-        if (tick_1ms > (tick_cnt + 200)) {
-            tick_cnt = tick_1ms;
+        static uint32_t tick_led = 0;
+        static uint32_t tick_rmii = 0;
+        if (tick_1ms > (tick_rmii + 1)) {
+            tick_rmii = tick_1ms;
+            pio_rmii_write(&rmii, (uint32_t *)buffer, length);
+        }
+        if (tick_1ms > (tick_led + 500)) {
+            tick_led = tick_1ms;
             gpio_toggle(gpio_led_cfg.pin);
         }
     }