1 files changed, 0 insertions, 125 deletions
diff --git a/boards/base/RaspberryPi/example-FreeRTOS/Drivers/uart.c b/boards/base/RaspberryPi/example-FreeRTOS/Drivers/uart.c
deleted file mode 100644
index 92f837e7..00000000
--- a/boards/base/RaspberryPi/example-FreeRTOS/Drivers/uart.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/* uart.c - UART initialization & communication */
-/* Reference material:
- * http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
- * Chapter 13: UART
- */
- 
-#include <stdint.h>
-#include <mmio.h>
-#include <uart.h>
- 
-enum {
-    // The GPIO registers base address.
-    GPIO_BASE = 0x20200000,
- 
-    // The offsets for reach register.
- 
-    // Controls actuation of pull up/down to ALL GPIO pins.
-    GPPUD = (GPIO_BASE + 0x94),
- 
-    // Controls actuation of pull up/down for specific GPIO pin.
-    GPPUDCLK0 = (GPIO_BASE + 0x98),
- 
-    // The base address for UART.
-    UART0_BASE = 0x20201000,
- 
-    // The offsets for reach register for the UART.
-    UART0_DR     = (UART0_BASE + 0x00),
-    UART0_RSRECR = (UART0_BASE + 0x04),
-    UART0_FR     = (UART0_BASE + 0x18),
-    UART0_ILPR   = (UART0_BASE + 0x20),
-    UART0_IBRD   = (UART0_BASE + 0x24),
-    UART0_FBRD   = (UART0_BASE + 0x28),
-    UART0_LCRH   = (UART0_BASE + 0x2C),
-    UART0_CR     = (UART0_BASE + 0x30),
-    UART0_IFLS   = (UART0_BASE + 0x34),
-    UART0_IMSC   = (UART0_BASE + 0x38),
-    UART0_RIS    = (UART0_BASE + 0x3C),
-    UART0_MIS    = (UART0_BASE + 0x40),
-    UART0_ICR    = (UART0_BASE + 0x44),
-    UART0_DMACR  = (UART0_BASE + 0x48),
-    UART0_ITCR   = (UART0_BASE + 0x80),
-    UART0_ITIP   = (UART0_BASE + 0x84),
-    UART0_ITOP   = (UART0_BASE + 0x88),
-    UART0_TDR    = (UART0_BASE + 0x8C),
-};
- 
-/*
- * delay function
- * int32_t delay: number of cycles to delay
- *
- * This just loops <delay> times in a way that the compiler
- * wont optimize away.
- */
-static void delay(int32_t count) {
-    asm volatile("__delay_%=: subs %[count], %[count], #1; bne __delay_%=\n"
-	     : : [count]"r"(count) : "cc");
-}
- 
-/*
- * Initialize UART0.
- */
-void uart_init() {
-    // Disable UART0.
-    mmio_write(UART0_CR, 0x00000000);
-    // Setup the GPIO pin 14 && 15.
- 
-    // Disable pull up/down for all GPIO pins & delay for 150 cycles.
-    mmio_write(GPPUD, 0x00000000);
-    delay(150);
- 
-    // Disable pull up/down for pin 14,15 & delay for 150 cycles.
-    mmio_write(GPPUDCLK0, (1 << 14) | (1 << 15));
-    delay(150);
- 
-    // Write 0 to GPPUDCLK0 to make it take effect.
-    mmio_write(GPPUDCLK0, 0x00000000);
- 
-    // Clear pending interrupts.
-    mmio_write(UART0_ICR, 0x7FF);
- 
-    // Set integer & fractional part of baud rate.
-    // Divider = UART_CLOCK/(16 * Baud)
-    // Fraction part register = (Fractional part * 64) + 0.5
-    // UART_CLOCK = 3000000; Baud = 115200.
- 
-    // Divider = 3000000/(16 * 115200) = 1.627 = ~1.
-    // Fractional part register = (.627 * 64) + 0.5 = 40.6 = ~40.
-    mmio_write(UART0_IBRD, 1);
-    mmio_write(UART0_FBRD, 40);
- 
-    // Enable FIFO & 8 bit data transmissio (1 stop bit, no parity).
-    mmio_write(UART0_LCRH, (1 << 4) | (1 << 5) | (1 << 6));
- 
-    // Mask all interrupts.
-    mmio_write(UART0_IMSC, (1 << 1) | (1 << 4) | (1 << 5) |
-		    (1 << 6) | (1 << 7) | (1 << 8) |
-		    (1 << 9) | (1 << 10));
- 
-    // Enable UART0, receive & transfer part of UART.
-    mmio_write(UART0_CR, (1 << 0) | (1 << 8) | (1 << 9));
-}
- 
-/*
- * Transmit a byte via UART0.
- * uint8_t Byte: byte to send.
- */
-void uart_putc(uint8_t byte) {
-    // wait for UART to become ready to transmit
-    while (1) {
-        if (!(mmio_read(UART0_FR) & (1 << 5))) {
-	    break;
-	}
-    }
-    mmio_write(UART0_DR, byte);
-}
- 
-/*
- * print a string to the UART one character at a time
- * const char *str: 0-terminated string
- */
-void uart_puts(const char *str) {
-    while (*str) {
-        uart_putc(*str++);
-    }
-}