158 lines
3.9 KiB
C
158 lines
3.9 KiB
C
#include <rtthread.h>
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#include "board.h"
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#define RT_DEVICE_CTRL_RTC_GET_COUNT 0x81 /**< get count */
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#define LED_NUM 4
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struct fm3_gpio_ctrl
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{
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uint32_t led_num;
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volatile uint32_t * PDOR;
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volatile uint32_t * PDIR;
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};
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struct fm3_led
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{
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/* inherit from rt_device */
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struct rt_device parent;
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struct fm3_gpio_ctrl fm3_gpio_ctrl[LED_NUM];
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};
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static struct fm3_led fm3_led;
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static rt_err_t rt_led_init (rt_device_t dev)
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{
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uint32_t i;
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/* led0 : P54 */
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FM3_GPIO->PFR5 &= ~((1<<7) | (1<<6) | (1<<5) |(1<<4)); /* set P54 fuction is GPIO. */
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FM3_GPIO->DDR5 |= (1<<7) | (1<<6) | (1<<5) |(1<<4); /* set P54 output. */
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/* LED0 */
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i = 0;
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fm3_led.fm3_gpio_ctrl[i].led_num = 4;
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fm3_led.fm3_gpio_ctrl[i].PDOR = &FM3_GPIO->PDOR5;
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fm3_led.fm3_gpio_ctrl[i].PDIR = &FM3_GPIO->PDIR5;
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/* LED1 */
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i++;
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fm3_led.fm3_gpio_ctrl[i].led_num = 5;
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fm3_led.fm3_gpio_ctrl[i].PDOR = &FM3_GPIO->PDOR5;
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fm3_led.fm3_gpio_ctrl[i].PDIR = &FM3_GPIO->PDIR5;
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/* LED2 */
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i++;
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fm3_led.fm3_gpio_ctrl[i].led_num = 6;
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fm3_led.fm3_gpio_ctrl[i].PDOR = &FM3_GPIO->PDOR5;
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fm3_led.fm3_gpio_ctrl[i].PDIR = &FM3_GPIO->PDIR5;
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/* LED3 */
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i++;
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fm3_led.fm3_gpio_ctrl[i].led_num = 7;
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fm3_led.fm3_gpio_ctrl[i].PDOR = &FM3_GPIO->PDOR5;
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fm3_led.fm3_gpio_ctrl[i].PDIR = &FM3_GPIO->PDIR5;
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return RT_EOK;
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}
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static rt_err_t rt_led_open(rt_device_t dev, rt_uint16_t oflag)
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{
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return RT_EOK;
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}
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static rt_err_t rt_led_close(rt_device_t dev)
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{
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return RT_EOK;
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}
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static rt_size_t rt_led_read (rt_device_t dev, rt_off_t pos, void* buffer,
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rt_size_t size)
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{
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rt_ubase_t index = 0;
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rt_ubase_t nr = size;
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rt_uint8_t * value = buffer;
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RT_ASSERT(dev == &fm3_led.parent);
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RT_ASSERT((pos+size) <= LED_NUM );
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for(index=0; index<nr; index++)
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{
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if(*fm3_led.fm3_gpio_ctrl[pos+index].PDIR & 1<<fm3_led.fm3_gpio_ctrl[pos+index].led_num)
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{
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*value = 0;
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}
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else
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{
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*value = 1;
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}
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value++;
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}
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return index;
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}
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static rt_size_t rt_led_write (rt_device_t dev, rt_off_t pos,
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const void* buffer, rt_size_t size)
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{
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rt_ubase_t index = 0;
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rt_ubase_t nw = size;
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const rt_uint8_t * value = buffer;
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RT_ASSERT(dev == &fm3_led.parent);
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RT_ASSERT((pos+size) <= LED_NUM );
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for(index=0; index<nw; index++)
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{
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if(*value++)
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{
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*fm3_led.fm3_gpio_ctrl[pos+index].PDOR &= ~(1<<fm3_led.fm3_gpio_ctrl[pos+index].led_num);
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}
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else
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{
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*fm3_led.fm3_gpio_ctrl[pos+index].PDOR |= (1<<fm3_led.fm3_gpio_ctrl[pos+index].led_num);
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}
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}
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return index;
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}
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static rt_err_t rt_led_control (rt_device_t dev, int cmd, void *args)
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{
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RT_ASSERT(dev == &fm3_led.parent);
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if(cmd == RT_DEVICE_CTRL_RTC_GET_COUNT)
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{
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rt_uint32_t * led_num = args;
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*led_num = LED_NUM;
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}
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return RT_EOK;
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}
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void rt_led_hw_init(void)
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{
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fm3_led.parent.type = RT_Device_Class_Char;
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fm3_led.parent.rx_indicate = RT_NULL;
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fm3_led.parent.tx_complete = RT_NULL;
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fm3_led.parent.init = rt_led_init;
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fm3_led.parent.open = rt_led_open;
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fm3_led.parent.close = rt_led_close;
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fm3_led.parent.read = rt_led_read;
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fm3_led.parent.write = rt_led_write;
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fm3_led.parent.control = rt_led_control;
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fm3_led.parent.user_data = RT_NULL;
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/* register a character device */
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rt_device_register(&fm3_led.parent, "led", RT_DEVICE_FLAG_RDWR);
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/* init led device */
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rt_led_init(&fm3_led.parent);
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}
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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void led(rt_uint32_t led, rt_uint32_t value)
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{
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rt_uint8_t led_value = value;
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rt_led_write(&fm3_led.parent, led, &led_value, 1);
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}
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FINSH_FUNCTION_EXPORT(led, e.g:led(0,100).)
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#endif
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