application: add demo_plic for plic demostration

currently you can only work in command line mode

Signed-off-by: Huaqi Fang <[email protected]>

application/baremetal/demo_plic/Makefile

@@ -0,0 +1,11 @@
+TARGET = demo_plic
+
+NUCLEI_SDK_ROOT = ../../..
+
+SRCDIRS = .
+
+INCDIRS = .
+
+INTMODE := plic
+
+include $(NUCLEI_SDK_ROOT)/Build/Makefile.base

application/baremetal/demo_plic/main.c

@@ -0,0 +1,38 @@
+// See LICENSE for license details.
+#include <stdio.h>
+#include "nuclei_sdk_hal.h"
+
+// plic uart0 interrupt handler
+void plic_uart0_handler(void)
+{
+    int32_t status = uart_get_status(SOC_DEBUG_UART);
+    printf("Enter uart0 interrupt, ");
+    if (status & UART_IP_RXIP_MASK) {
+        unsigned char c_get;
+        // Clear rx pending
+        uart_clear_status(SOC_DEBUG_UART, UART_IP_RXIP_MASK);
+        c_get = uart_read(SOC_DEBUG_UART);
+        printf("you just typed: %c\n", c_get);
+    } else {
+        printf("\n");
+    }
+}
+
+
+int main(int argc, char **argv)
+{
+    int32_t returnCode;
+
+    // register plic uart0 interrupt
+    returnCode = PLIC_Register_IRQ(PLIC_UART0_IRQn, 1, plic_uart0_handler);
+
+    // Enable interrupts in general.
+    __enable_irq();
+
+    // Enable uart0 receive interrupt
+    uart_enable_rxint(SOC_DEBUG_UART);
+    printf("You can press any key now to trigger uart receive interrupt\n");
+    // Wait uart0 press any key
+    while (1);
+    return 0;
+}

application/baremetal/demo_plic/npk.yml

@@ -0,0 +1,42 @@
+## Package Base Information
+name: app-nsdk_demo_plic
+owner: nuclei
+description: PLIC Interrupt Demo
+type: app
+keywords:
+  - app
+  - risc-v
+license:
+homepage:
+
+## Package Dependency
+dependencies:
+  - name: sdk-nuclei_sdk
+    version:
+
+## Package Configurations
+configuration:
+  app_commonflags:
+    value:
+    type: text
+    description: Application Compile Flags
+
+## Set Configuration for other packages
+setconfig:
+
+
+## Source Code Management
+codemanage:
+  copyfiles:
+    - path: ["*.c", "*.h"]
+  incdirs:
+    - path: ["./"]
+  libdirs:
+  ldlibs:
+    - libs: [""]
+
+## Build Configuration
+buildconfig:
+  - type: common
+    common_flags: # flags need to be combined together across all packages
+      - flags: ${app_commonflags}