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labw9

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This commit is contained in:
tbarnes98
2022-02-22 10:13:36 -06:00
parent aee2b8acbd
commit 0962cf0c2a
4 changed files with 217 additions and 16 deletions
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90
labW9barnestr/Inc/tasker.h
View File

@@ -11,6 +11,94 @@
#include <inttypes.h>
// RCC
typedef struct {
uint32_t CR;
uint32_t PLL_CFGR;
uint32_t CFGR;
uint32_t CIR;
uint32_t AHB1RSTR;
uint32_t AHB2RSTR;
uint32_t AHB3RSTR;
uint32_t _RESERVED_1_;
uint32_t APB1RSTR;
uint32_t APB2RSTR;
uint32_t _RESERVED_2_;
uint32_t _RESERVED_3_;
uint32_t AHB1ENR;
uint32_t AHB2ENR;
uint32_t AHB3ENR;
uint32_t _RESERVED_4_;
uint32_t APB1ENR;
uint32_t APB2ENR;
uint32_t _RESERVED_5_;
uint32_t _RESERVED_6_;
} RCC;
// GPIO
typedef struct {
uint32_t MODER;
uint32_t OTYPER;
uint32_t OSPEEDER;
uint32_t PUPDR;
uint32_t IDR;
uint32_t ODR;
uint32_t BSRR;
uint32_t LCKR;
uint32_t AFRL;
uint32_t AFRH;
} GPIO;
typedef struct {
uint32_t CR1; // Control Register 1
uint32_t CR2; // Control Register 2
uint32_t SMCR; // Slave Mode Control Register
uint32_t DIER; // DMA/Interrupt Enable Register
uint32_t SR; // Status Register
uint32_t EGR; // Event Generation Register
uint32_t CCMR1; // Capture/Compare Mode Register 1
uint32_t CCMR2; // Capture/Compare Mode Register 2
uint32_t CCER; // Capture/Compare Enable Register
uint32_t CNT; // Counter
uint32_t PSC; // Prescaler
uint32_t ARR; // Auto-Reload Register
uint32_t _RESERVED_1_;
uint32_t CCR1; // Capture/Compare Register 1
uint32_t CCR2; // Capture/Compare Register 2
uint32_t CCR3; // Capture/Compare Register 3
uint32_t CCR4; // Capture/Compare Register 4
uint32_t _RESERVED_2_;
uint32_t DCR; // DMA Control Register
uint32_t DMAR; // DMA Address for Full Transfer
uint32_t TIM2_OR; // TIM2 Option Register
uint32_t TIM5_OR; // TIM5 Option Register
} TIM;
// Will have to include timer for task switching interrupt
// SYSCFG
typedef struct {
uint32_t MEMRMP;
uint32_t PMC;
uint32_t EXTICR1;
uint32_t EXTICR2;
uint32_t EXTICR3;
uint32_t EXTICR4;
uint32_t CMPCR;
uint32_t CFGR;
} SYSCFG;
// Interrupt
#define NVIC_ISER1 (volatile uint32_t*) 0xE000E104
typedef struct {
uint32_t IMR;
uint32_t EMR;
uint32_t RTSR;
uint32_t FTSR;
uint32_t SWIER;
uint32_t PR;
} EXTI;
typedef enum{PAUSED, ACTIVE} task_state;
#define SCB_ICSR 0xE000D04
@@ -29,8 +117,6 @@ typedef struct {
task_state state;
} Task;
void SysTick_Init();
void tasker_tick();
void init_tasker(uint32_t total_tasks, uint32_t main_ticks);

126
labW9barnestr/Src/main.c
View File

@@ -1,7 +1,13 @@
/**
* @file main.c
* @author Trevor Barnes
* @brief
* @brief Main driver for the task switching lab. Provides the code that
* initlizes the tasker/tasks. Also initializes any components being used
* in the tasks.
* Experience: Although this lab is not finished, I could see how to go
* about implementing the task switching. Each requested task would have
* been intilialized and the program would continuously switch between
* each task for an alotted or infinite amount of time.
* @version 0.1
* @date 2022-02-11
*
@@ -14,10 +20,124 @@
#include <string.h>
#include <math.h>
#include "uart_driver.h"
#include "delay.h"
#include "memory.h"
#include "led.h"
#include "delay.h"
#include "piezoSpeaker.h"
#include "tasker.h"
int main(void) {
#define F_CPU 16000000UL
void printHelp() {
printf("*Commands*\n\r");
printf("'rmw {hex address}' - Reads mem at a given address\n\r");
printf("'wmw {hex address} {value}' - Writes the given value as a word to "
"the given address\n\r");
printf("'dm {hex address} {length}' - Dumps the memory at a given address. "
"Defaults to 16 B if no length is given\n\r");
printf("'ps {song choice}' - Plays a song with the given selection\n\r");
printf("'songs' - Prints info about each song selection\n\r");
}
void songInfo() {
printf("Type 1 or 2 to play a song!\n\r");
printf("Song 1: Imperial March from Star Wars\n\r");
printf("Song 2: Metropolis Theme from Ratchet & Clank\n\r");
printf("Song 3: Flower Garden from Yoshi's Island\n\r");
}
int main(void) {
init_usart2(57600, F_CPU);
piezo_init();
led_init();
// Entry point for each task
// TODO: Arbitrary values for now
uint32_t * t1 = 0;
uint32_t * t2 = 0;
// Setup tasks
init_tasker(2, 20);
// Init Knight Rider Lights
// TODO: Find out what values are reasonable to init with, arbitrary for now
init_task(1, 50, t1, 10);
// Init Music
init_task(2, 50, t2, 10);
// Constantly switch between tasks in forever loop
// Following will need to be moved and/or greatly altered
char line[50];
char command[10];
int address;
int data;
int length;
int songSelection;
char background;
for(;;) {
// Get command from user
fgets(line, 100, stdin);
// Parse only the command for strcmp
sscanf(line, "%s", command);
if (!strcmp(command, "help")) {
// Print Help
printHelp();
} else if (!strcmp(command, "songs")) {
// Print Song Info
songInfo();
} else if (!strcmp(command, "rmw")) {
// Read Memory
sscanf(line, "%s %X", command, &address);
readMem(address);
} else if (!strcmp(command, "wmw")) {
// Write Memory
sscanf(line, "%s %X %u", command, &address, &data);
writeMem(address, data);
} else if (!strcmp(command, "dm")) {
// Dump Memory
sscanf(line, "%s %X %u", command, &address, &length);
dumpMem(address, length);
} else if (!strcmp(command, "ps")) {
// Song Selection Command Format:
// "ps {songSelection} {background}"
sscanf(line, "%s %u %c", command, &songSelection, &background);
if (background == 'b') {
switch(songSelection) {
case 1:
printf("Playing Imperial March in the background\n\r");
play_song_br(songIM);
break;
case 2:
printf("Playing Metropolis Theme in the background\n\r");
play_song_br(songMT);
break;
case 3:
printf("Playing Flower Garden in the background\n\r");
play_song_br(songFG);
break;
default:
break;
printf("Invalid song selection\n\r");
}
} else {
// Without valid flag, program plays songs in foreground
switch(songSelection) {
case 1:
printf("Playing Imperial March\n\r");
play_song(songIM);
break;
case 2:
printf("Playing Metropolis Theme\n\r");
play_song(songMT);
break;
case 3:
printf("Playing Flower Garden\n\r");
play_song(songFG);
break;
default:
break;
printf("Invalid song selection\n\r");
}
}
} else {
printf("Invalid input, type 'help' for instructions\n\r");
}
}
}

10
labW9barnestr/Src/tasker.c
View File

@@ -13,11 +13,9 @@
#include <inttypes.h>
#include "tasker.h"
void SysTick_Init() {
}
void init_task(uint32_t task_num, uint32_t stacksize, void(*entry_point)(void), uint32_t ticks) {
void init_task(uint32_t task_num, uint32_t stacksize, void(*entry_point)(void),
uint32_t ticks) {
tasks[task_num].stack_pointer = (uint32_t*)malloc(stacksize*sizeof(uint32_t));
tasks[task_num].stack_pointer += stacksize;
*(--tasks[task_num].stack_pointer) = 0x01000000; // PSR
@@ -61,10 +59,6 @@ void tasker_tick() {
}
}
void SysTick_Handler(void) {
}
void PendSV_Handler(void) {
register uint32_t* stack_pointer asm("r13");
asm volatile("push {r4-r11,lr}");