Aim
This program demonstrates the very simplest of programs, a flashing led, other projects have built on this library to use the ethernet, RTC, timers, SPI, uart1 and GPIO peripherals.
Revision 0:f4dd9936dfd9, committed 2018-12-06
- Comitter:
- andrewboyson
- Date:
- Thu Dec 06 11:23:34 2018 +0000
- Commit message:
- Created as had 'repository error' on the original program.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lpc1768.lib Thu Dec 06 11:23:34 2018 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/andrewboyson/code/lpc1768/#98729c466609
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main/handlers.c Thu Dec 06 11:23:34 2018 +0000
@@ -0,0 +1,35 @@
+#include "led.h"
+
+__irq void DefaultHandler()
+{
+ int value = 0;
+ int count = 0;
+ while (1)
+ {
+ count++;
+ if (count > 10000000)
+ {
+ value = !value;
+ Led1Set( value);
+ Led2Set(!value);
+ Led3Set(!value);
+ Led4Set( value);
+ count = 0;
+ }
+ }
+}
+__irq void HardFaultHandler()
+{
+ int value = 0;
+ int count = 0;
+ while (1)
+ {
+ count++;
+ if (count > 10000000)
+ {
+ value = !value;
+ Led4Set(value);
+ count = 0;
+ }
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main/main.c Thu Dec 06 11:23:34 2018 +0000
@@ -0,0 +1,24 @@
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "periphs.h"
+#include "system.h"
+#include "led.h"
+
+int main()
+{
+ PeriphsInit();
+ SystemInit();
+ LedInit();
+
+ int count = 0;
+ while (true)
+ {
+ ++count;
+ if (count > 10000000)
+ {
+ Led1Tgl();
+ count = 0;
+ }
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main/periphs.c Thu Dec 06 11:23:34 2018 +0000
@@ -0,0 +1,54 @@
+#define PCONP (*((volatile unsigned *) 0x400FC0C4))
+#define PCLKSEL0 (*((volatile unsigned *) 0x400FC1A8))
+#define PCLKSEL1 (*((volatile unsigned *) 0x400FC1AC))
+#define PINSEL0 (*((volatile unsigned *) 0x4002C000))
+#define PINSEL1 (*((volatile unsigned *) 0x4002C004))
+#define PINSEL2 (*((volatile unsigned *) 0x4002C008))
+#define PINSEL3 (*((volatile unsigned *) 0x4002C00C))
+
+
+void PeriphsInit (void)
+{
+ //Peripheral power - Table 46
+ PCONP = 0;
+ PCONP |= 1U << 1; //TIMER0
+ PCONP |= 1U << 3; //UART0
+ PCONP |= 1U << 4; //UART1
+ PCONP |= 1U << 9; //RTC
+ PCONP |= 1U << 10; //SSP1
+ PCONP |= 1U << 15; //GPIO
+ PCONP |= 1U << 30; //ENET
+
+ //Peripheral clocks; default is 0b00 to divide by 4; specify 0b01 to divide by 1
+ PCLKSEL0 = 0;
+ PCLKSEL0 |= 1U << 2; //TIM0
+ PCLKSEL0 |= 1U << 6; //UART0
+ PCLKSEL0 |= 1U << 8; //UART1
+ PCLKSEL0 |= 1U << 20; //SSP1
+
+ //Pin functions table 80.
+ PINSEL0 = 0;
+ PINSEL0 |= 1U << 4; //P0.02 01 TXD0 UART0
+ PINSEL0 |= 1U << 6; //P0.03 01 RXD0 UART0
+ PINSEL0 |= 2U << 14; //P0.07 10 SCK1 SSP1
+ PINSEL0 |= 2U << 16; //P0.08 10 MISO1 SSP1
+ PINSEL0 |= 2U << 18; //P0.09 10 MOSI1 SSP1
+ PINSEL0 |= 1U << 30; //P0.15 01 TXD1 UART1
+
+ PINSEL1 = 0;
+ PINSEL1 |= 1U << 0; //P0.16 01 RXD1 UART1
+
+ PINSEL2 = 0;
+ PINSEL2 |= 1U << 0; //P1.00 01 ENET_TXD0
+ PINSEL2 |= 1U << 2; //P1.01 01 ENET_TXD1
+ PINSEL2 |= 1U << 8; //P1.04 01 ENET_TX_EN
+ PINSEL2 |= 1U << 16; //P1.08 01 ENET_CRS
+ PINSEL2 |= 1U << 18; //P1.09 01 ENET_RXD0
+ PINSEL2 |= 1U << 20; //P1.10 01 ENET_RXD1
+ PINSEL2 |= 1U << 28; //P1.14 01 ENET_RX_ER
+ PINSEL2 |= 1U << 30; //P1.15 01 ENET_REF_CLK
+
+ PINSEL3 = 0;
+ PINSEL3 |= 1U << 0; //P1.16 01 ENET_MDC
+ PINSEL3 |= 1U << 2; //P1.17 01 ENET_MDIO
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/periphs.h Thu Dec 06 11:23:34 2018 +0000 @@ -0,0 +1,1 @@ +extern void PeriphsInit (void); \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/vectors.S Thu Dec 06 11:23:34 2018 +0000 @@ -0,0 +1,68 @@ + +__initial_sp EQU 0x10008000 ; Top of RAM from LPC1768 + + PRESERVE8 + THUMB + +; Vector Table Mapped to Address 0 at Reset + + AREA RESET, DATA, READONLY + EXPORT __Vectors + IMPORT __main + IMPORT DefaultHandler + IMPORT HardFaultHandler + +__Vectors DCD __initial_sp ; Top of Stack + DCD __main ; Reset Handler + DCD DefaultHandler ; NMI Handler + DCD HardFaultHandler ; Hard Fault Handler + DCD DefaultHandler ; MPU Fault Handler + DCD DefaultHandler ; Bus Fault Handler + DCD DefaultHandler ; Usage Fault Handler + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD 0 ; Reserved + DCD DefaultHandler ; SVCall Handler + DCD DefaultHandler ; Debug Monitor Handler + DCD 0 ; Reserved + DCD DefaultHandler ; PendSV Handler + DCD DefaultHandler ; SysTick Handler + + ; External Interrupts + DCD DefaultHandler ; Watchdog Timer + DCD DefaultHandler ; Timer0 + DCD DefaultHandler ; Timer1 + DCD DefaultHandler ; Timer2 + DCD DefaultHandler ; Timer3 + DCD DefaultHandler ; UART0 + DCD DefaultHandler ; UART1 + DCD DefaultHandler ; UART2 + DCD DefaultHandler ; UART3 + DCD DefaultHandler ; PWM1 + DCD DefaultHandler ; I2C0 + DCD DefaultHandler ; I2C1 + DCD DefaultHandler ; I2C2 + DCD DefaultHandler ; SPI + DCD DefaultHandler ; SSP0 + DCD DefaultHandler ; SSP1 + DCD DefaultHandler ; PLL0 Lock (Main PLL) + DCD DefaultHandler ; Real Time Clock + DCD DefaultHandler ; External Interrupt 0 + DCD DefaultHandler ; External Interrupt 1 + DCD DefaultHandler ; External Interrupt 2 + DCD DefaultHandler ; External Interrupt 3 + DCD DefaultHandler ; A/D Converter + DCD DefaultHandler ; Brown-Out Detect + DCD DefaultHandler ; USB + DCD DefaultHandler ; CAN + DCD DefaultHandler ; General Purpose DMA + DCD DefaultHandler ; I2S + DCD DefaultHandler ; Ethernet + DCD DefaultHandler ; Repetitive Interrupt Timer + DCD DefaultHandler ; Motor Control PWM + DCD DefaultHandler ; Quadrature Encoder Interface + DCD DefaultHandler ; PLL1 Lock (USB PLL) + + ALIGN + END