Merge pull request #16 from linlingao/k64f_example

Changed to K64F example

Author: Cruz Monrreal

Baremetal-Blinky/README.md

@@ -1,18 +1,16 @@
 ## Baremetal Blinky example using Mbed OS
 
-This guide reviews the steps required to build and run a baremetal Blinky application on TI's CC3220SF LaunchXL platform without using DigitalOut class and timers.
+This guide reviews the steps required to build and run a baremetal Blinky application on FRDM-K64F without using DigitalOut class and timers.
 
 Please install [Mbed CLI](https://github.com/ARMmbed/mbed-cli#installing-mbed-cli).
 
-This example retrieves code from https://github.com/ARMmbed/mbed-os-ti-port. It's a private repo; please contact [email protected] to request access.
-
 ### Import the example application
 
 From the command-line, import the example:
 
 ```
 git clone https://github.com/ARMmbed/mbed-os-examples-docs_only.git
-cd Baremetal-Blinky
+cd mbed-os-examples-docs_only/Baremetal-Blinky
 mbed config root .
 mbed deploy
 ```
@@ -21,12 +19,12 @@ mbed deploy
 
 
 ```
-mbed compile -m cc3220sf -t gcc_arm 
+mbed compile -m k64f -t gcc_arm 
 ```
 
 #### Program your board
 
 1. Connect your Mbed device to the computer over USB.
 2. Copy the binary file to the Mbed device.
-3. Observe the red LED blinking.
+3. Observe LED blinking.
 

Baremetal-Blinky/main.cpp

@@ -1,82 +1,33 @@
 #include "mbed.h"
+#include "MK64F12.h"
 
-// Port A0: 0x40004000 GPIO0 to GPIO7
-// Port A1: 0x40005000 GPIO8 to GPIO15 Use GPIO13 (SW2) as input, GPIO9(D10 Red) as output
-// Port A2: 0x40006000 GPIO16 to GPIO23
-// Port A3: 0x40007000 GPIO24 to GPIO31
-
-#define WAIT_CYCLES_LONG          10000000
-#define WAIT_CYCLES_SHORT         1000000
-#define INPUT_PIN_PORTA1          5
-#define OUTPUT_PIN_PORTA1         1
-#define GPIO_PORTA1_ADDRESS       0x40005000
-#define GPIO_PAD_CONFIG_9_ADDRESS 0x4402E0C4
-#define OFFSET_DIR                0x400
-#define OFFSET_DATA               0
-#define ARCM_BASE                 0x44025000
-#define PRCM_RUN_MODE_CLK         0x00000001
-#define PRCM_SLP_MODE_CLK         0x00000100
-#define GPIO_PAD_CONFIG_9         0x4402E0C4
-#define PAD_MODE_MASK             0x0000000F
-
-static void set_gpio_dir()
+void bm_gpio_init(void)
 {
-    // Configure direction Bit 7:0 DIR, 0 = input, 1 = output
-    *((volatile unsigned long*)(GPIO_PORTA1_ADDRESS + OFFSET_DIR)) &= ~0x20; // Configure SW2 as input
-    *((volatile unsigned long*)(GPIO_PORTA1_ADDRESS + OFFSET_DIR)) |= 0x2;   // Configure D10 as output
-
+    SIM->SCGC5 = SIM_SCGC5_PORTB_MASK;
+    PORTB->PCR[22] = PORT_PCR_MUX(1U);
+    PTB->PDDR = (1U << 22U);
 }
 
-static const unsigned long g_ulPinToPadMap[64] =
+void bm_delay(void)
 {
-    10,11,12,13,14,15,16,17,255,255,18,
-    19,20,21,22,23,24,40,28,29,25,255,
-    255,255,255,255,255,255,255,255,255,255,255,
-    255,255,255,255,255,255,255,255,255,255,255,
-    31,255,255,255,255,0,255,32,30,255,1,
-    255,2,3,4,5,6,7,8,9
-};
-
-void PinModeSet(unsigned long ulPin,unsigned long ulPinMode)
-{
-    unsigned long ulPad;
-
-    // Get the corresponding Pad
-    ulPad = g_ulPinToPadMap[ulPin & 0x3F];
-
-    // Calculate the register address
-    ulPad = ((ulPad << 2) + (0x4402E000+0x000000A0));
+    volatile unsigned int i,j;
 
-    // Set the mode.
-    *((volatile unsigned long*)(ulPad)) = (((*((volatile unsigned long*)(ulPad))) & ~PAD_MODE_MASK) |  ulPinMode) & ~(3<<10);
+    for (i = 0U; i < 100000U; i++) {
+        for (j = 0U; j < 100U; j++) {
+            __asm__("nop");
+        }
+    }
 }
 
-int main()
+int main(void)
 {
-    PinModeSet(0x0000003F,0x000000000);
-    *((volatile unsigned long*)(ARCM_BASE + 0x58)) |= PRCM_RUN_MODE_CLK || PRCM_SLP_MODE_CLK;
-
-    unsigned long wait_cycles_in_use = WAIT_CYCLES_SHORT;
-    volatile unsigned long delay = 0;
+    bm_gpio_init();
 
-    set_gpio_dir();
-    *((volatile unsigned long*)(GPIO_PAD_CONFIG_9))|= 0x220;
-
-    while (true)
-    {
-
-        // Check if SW2 is pressed
-        if (*(volatile unsigned long *)(GPIO_PORTA1_ADDRESS + OFFSET_DATA + ((1 << INPUT_PIN_PORTA1) << 2)))
-        {
-            wait_cycles_in_use = WAIT_CYCLES_LONG;
-        }
+    PTB->PSOR = (1U << 22U);
 
-        *(volatile unsigned long *)(GPIO_PORTA1_ADDRESS + OFFSET_DATA + ((1 << OUTPUT_PIN_PORTA1) << 2)) = (OUTPUT_PIN_PORTA1 << 1);
-        delay = wait_cycles_in_use;
-        while (delay--);
-        *(volatile unsigned long *)(GPIO_PORTA1_ADDRESS + OFFSET_DATA + ((1 << OUTPUT_PIN_PORTA1) << 2)) = 0;
-        delay = wait_cycles_in_use;
-        while (delay--);
+    while (1) {
+        PTB->PTOR = (1U << 22U);
+      	bm_delay();
     }
 }
 

Baremetal-Blinky/mbed-os.lib

@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os-ti-port/#1304ebdb5e8d1e6d13aabe1360813b75f58c0828
+https://github.com/ARMmbed/mbed-os/#2fd0c5cfbd83fce62da6308f9d64c0ab64e1f0d6