[bsp/ls1cdev]

1、uart驱动重写，采用uart驱动框架
2、添加并修改勤为本ls1c_uart
3、开启main为用户程序入口，删除application.c和startup.c,并对初始化部分做相应调整更新。
4、开启dhcp

1 files changed, 316 insertions, 0 deletions

diff --git a/bsp/ls1cdev/libraries/ls1c_uart.c b/bsp/ls1cdev/libraries/ls1c_uart.c
new file mode 100644
index 0000000000..baa3b6e3ac
--- /dev/null
+++ b/bsp/ls1cdev/libraries/ls1c_uart.c
@@ -0,0 +1,316 @@
+// 串口相关源码
+
+#include <stdio.h>
+#include <stdarg.h>
+#include "ls1c_public.h"
+#include "ls1c_regs.h"
+#include "ls1c_pin.h"
+#include "ls1c_uart.h"
+#include "ls1c_clock.h"
+#include "ls1c.h"
+
+
+// 串口线路状态寄存器的位域
+#define LS1C_UART_LSR_TE                (1 << 6)
+#define LS1C_UART_LSR_TFE               (1 << 5)
+
+
+// 打印缓存的大小
+#define LS1C_UART_PRINT_BUF_SIZE        (256)
+
+
+// 调试串口信息
+ls1c_uart_info_t debug_uart_info = {0};
+
+
+/*
+ * 获取指定串口模块的基地址
+ * @UARTx 串口编号
+ * @ret 基地址
+ */
+void *uart_get_base(ls1c_uart_t UARTx)
+{
+    void *base = NULL;
+
+    switch (UARTx)
+    {
+        case LS1C_UART00:
+            base = (void *)LS1C_UART00_BASE;
+            break;
+        case LS1C_UART01:
+            base = (void *)LS1C_UART01_BASE;
+            break;
+
+        case LS1C_UART1:
+            base = (void *)LS1C_UART1_BASE;
+            break;
+        
+        case LS1C_UART2:
+            base = (void *)LS1C_UART2_BASE;
+            break;
+
+        case LS1C_UART3:
+            base = (void *)LS1C_UART3_BASE;
+            break;
+        
+        case LS1C_UART4:
+            base = (void *)LS1C_UART4_BASE;
+            break;
+
+        case LS1C_UART5:
+            base = (void *)LS1C_UART5_BASE;
+            break;
+
+        case LS1C_UART6:
+            base = (void *)LS1C_UART6_BASE;
+            break;
+
+        case LS1C_UART7:
+            base = (void *)LS1C_UART7_BASE;
+            break;
+
+        case LS1C_UART8:
+            base = (void *)LS1C_UART8_BASE;
+            break;
+
+        case LS1C_UART9:
+            base = (void *)LS1C_UART9_BASE;
+            break;
+
+        case LS1C_UART10:
+            base = (void *)LS1C_UART10_BASE;
+            break;
+
+        case LS1C_UART11:
+            base = (void *)LS1C_UART11_BASE;
+            break;
+
+        default:
+            break;
+    }
+
+    return base;
+}
+
+
+/*
+ * 初始化指定的串口模块
+ * @uart_info_p 串口模块信息
+ */
+void uart_init(ls1c_uart_info_t *uart_info_p)
+{
+    void *uart_base = uart_get_base(uart_info_p->UARTx);
+    unsigned long baudrate_div = 0;
+
+    // 禁止所有中断
+    reg_write_8(0,      uart_base + LS1C_UART_IER_OFFSET);
+    
+    // 接收FIFO的中断申请Trigger为14字节，清空发送和接收FIFO，并复位
+    reg_write_8(0xc3,   uart_base + LS1C_UART_FCR_OFFSET);
+    
+    // 设置波特率
+    reg_write_8(0x80,   uart_base + LS1C_UART_LCR_OFFSET);
+    baudrate_div = clk_get_cpu_rate() / 16 / uart_info_p->baudrate / 2;
+    reg_write_8((baudrate_div >> 8) & 0xff, uart_base + LS1C_UART_MSB_OFFSET);
+    reg_write_8(baudrate_div & 0xff,        uart_base + LS1C_UART_LSB_OFFSET);
+
+    // 8个数据位，1个停止位，无校验
+    reg_write_8(0x03,   uart_base + LS1C_UART_LCR_OFFSET);
+
+    // 使能接收中断
+    if (TRUE == uart_info_p->rx_enable)
+    {
+        reg_write_8(IER_IRxE|IER_ILE , uart_base + LS1C_UART_IER_OFFSET);
+    }
+
+    return ;
+}
+
+
+/*
+ * 判断FIFO是否为空
+ * @uartx 串口号
+ * @ret TRUE or FALSE
+ */
+BOOL uart_is_transmit_empty(ls1c_uart_t uartx)
+{
+    void *uart_base = uart_get_base(uartx);
+    unsigned char status = reg_read_8(uart_base + LS1C_UART_LSR_OFFSET);
+
+    if (status & (LS1C_UART_LSR_TE | LS1C_UART_LSR_TFE))
+    {
+        return TRUE;
+    }
+    else
+    {
+        return FALSE;
+    }
+}
+
+
+/*
+ * 发送一个字节
+ * @uartx 串口号
+ * @ch 待发送的字符串
+ */
+void uart_putc(ls1c_uart_t uartx, unsigned char ch)
+{
+    void *uart_base = uart_get_base(uartx);
+    
+    // 等待
+    while (FALSE == uart_is_transmit_empty(uartx))
+        ;
+
+    // 发送
+    reg_write_8(ch, uart_base + LS1C_UART_DAT_OFFSET);
+
+    return ;
+}
+
+
+/*
+ * 打印一个字符串到指定串口
+ * @uartx 串口号
+ * @str 待打印的字符串
+ */
+void uart_print(ls1c_uart_t uartx, const char *str)
+{
+    while ('\0' != *str)                // 判断是否为字符串结束符
+    {
+        uart_putc(uartx, *str);   // 发送一个字符
+        str++;
+    }
+
+    return ;
+}
+
+
+/*
+ * 初始化串口2
+ */
+void uart2_init(void)
+{
+    unsigned int tx_gpio = 37;
+    unsigned int rx_gpio = 36;
+
+    // 设置复用
+    pin_set_remap(tx_gpio, PIN_REMAP_SECOND);
+    pin_set_remap(rx_gpio, PIN_REMAP_SECOND);
+    
+    // 初始化相关寄存器
+    debug_uart_info.UARTx = LS1C_UART2;
+    debug_uart_info.baudrate = 115200;
+    debug_uart_info.rx_enable = FALSE;  // 调试串口只需要打印(发送)功能，不需要接收功能
+    uart_init(&debug_uart_info);
+
+    return ;
+}
+
+
+/*
+ * 在串口2上打印字符串
+ * @str 待打印的字符串
+ */
+void uart2_print(const char *str)
+{
+    uart_print(LS1C_UART2, str);
+    return ;
+}
+
+
+/*
+ * 在调试串口打印字符串
+ * @str 待打印的字符串
+ */
+void uart_debug_print(const char *str)
+{
+    uart_print(debug_uart_info.UARTx, str);
+    return ;
+}
+
+
+/*
+ * 在调试串口打印一个字符
+ * @ch 待打印的字符
+ */
+void uart_debug_putc(unsigned char ch)
+{
+    uart_putc(debug_uart_info.UARTx, ch);
+    return ;
+}
+
+
+/*
+ * 把中断号转换为串口号
+ * @IRQn 中断号
+ * @ret 串口号
+ */
+ls1c_uart_t uart_irqn_to_uartx(int IRQn)
+{
+    ls1c_uart_t uartx = LS1C_UART2;
+    
+    switch (IRQn)
+    {
+        /* 串口UART00和UART01的中断号还待确定
+        case LS1C_UART00_IRQ:
+            uartx = LS1C_UART00;
+            break;
+
+        case LS1C_UART01_IRQ:
+            uartx = LS1C_UART01;
+            break;
+       */
+
+        case LS1C_UART1_IRQ:
+            uartx = LS1C_UART1;
+            break;
+            
+        case LS1C_UART2_IRQ:
+            uartx = LS1C_UART2;
+            break;
+        
+        case LS1C_UART3_IRQ:
+            uartx = LS1C_UART3;
+            break;
+        
+        case LS1C_UART4_IRQ:
+            uartx = LS1C_UART4;
+            break;
+        
+        case LS1C_UART5_IRQ:
+            uartx = LS1C_UART5;
+            break;
+        
+        case LS1C_UART6_IRQ:
+            uartx = LS1C_UART6;
+            break;
+        
+        case LS1C_UART7_IRQ:
+            uartx = LS1C_UART7;
+            break;
+        
+        case LS1C_UART8_IRQ:
+            uartx = LS1C_UART8;
+            break;
+        
+        case LS1C_UART9_IRQ:
+            uartx = LS1C_UART9;
+            break;
+        
+        case LS1C_UART10_IRQ:
+            uartx = LS1C_UART10;
+            break;
+        
+        case LS1C_UART11_IRQ:
+            uartx = LS1C_UART11;
+            break;
+        
+        default:
+            uartx = LS1C_UART2;
+            break;
+    }
+
+    return uartx;
+}
+
+