sam/applications/starter_kit_demo/main.c File Reference

Starter Kit Demo.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include <string.h>

Macros
#define	BUFFER_SIZE   128
#define	IRQ_PRIOR_PIO   0

Functions
static void	Button1_Handler (uint32_t id, uint32_t mask)
	Handler for Button 1 rising edge interrupt. More...
static void	Button2_Handler (uint32_t id, uint32_t mask)
	Handler for Button 2 rising edge interrupt. More...
static void	Button3_Handler (uint32_t id, uint32_t mask)
	Handler for Button 3 rising edge interrupt. More...
static void	configure_adc (void)
	Configure the ADC for the light sensor. More...
static void	configure_buttons (void)
	Configure the Pushbuttons. More...
static void	display_sd_files (void)
	Show SD card content on the OLED screen. More...
static void	display_sd_info (void)
	Show SD card status on the OLED screen. More...
static void	get_num_files_on_sd (void)
	Get the number of files at the root of the SD card. More...
int	main (void)
static void	ProcessButtonEvt (uint8_t uc_button)
	Process Buttons Events. More...
static void	SD_Detect_Handler (uint32_t id, uint32_t mask)
	Handler for SD card detect rising edge interrupt. More...
static void	ssd1306_clear_char (void)
	Clear one character at the cursor current position on the OLED screen. More...
static void	ssd1306_draw_graph (uint8_t col, uint8_t page, uint8_t width, uint8_t height, uint8_t *tab)
	Draw graph on the OLED screen using the provided point array. More...

Variables
volatile uint32_t	app_mode = 2
volatile uint32_t	app_mode_switch = 1
FATFS	fs
volatile uint32_t	sd_fs_found = 0
volatile uint32_t	sd_listing_pos = 0
volatile uint32_t	sd_num_files = 0
volatile uint32_t	sd_update = 0

#define BUFFER_SIZE   128

Referenced by main().

#define IRQ_PRIOR_PIO   0

Referenced by configure_buttons().

static void Button1_Handler ( uint32_t  id, uint32_t  mask  )

static

Handler for Button 1 rising edge interrupt.

Parameters

id	The button ID.
mask	The button mask.

References ProcessButtonEvt().

Referenced by configure_buttons().

static void Button2_Handler ( uint32_t  id, uint32_t  mask  )

static

Handler for Button 2 rising edge interrupt.

Parameters

id	The button ID.
mask	The button mask.

References ProcessButtonEvt().

Referenced by configure_buttons().

static void Button3_Handler ( uint32_t  id, uint32_t  mask  )

static

Handler for Button 3 rising edge interrupt.

Parameters

id	The button ID.
mask	The button mask.

References ProcessButtonEvt().

Referenced by configure_buttons().

static void configure_adc ( void  )

static

Configure the ADC for the light sensor.

References adc_enable_channel(), ADC_TRIG_SW, gpio_configure_pin, pmc_enable_periph_clk(), and sysclk_get_cpu_hz().

Referenced by main().

static void configure_buttons ( void  )

static

Configure the Pushbuttons.

Configure the PIO as inputs and generate corresponding interrupt when pressed or released.

References Button1_Handler(), Button2_Handler(), Button3_Handler(), IRQ_PRIOR_PIO, pio_enable_interrupt(), pio_set_debounce_filter(), pmc_enable_periph_clk(), and SD_Detect_Handler().

Referenced by main().

static void display_sd_files ( void  )

static

Show SD card content on the OLED screen.

Note

Does not browse sub folders.

References _MAX_LFN, f_opendir(), f_readdir(), FILINFO::fname, FR_OK, sd_listing_pos, ssd1306_set_column_address(), ssd1306_set_page_address(), and ssd1306_write_text().

Referenced by main().

static void display_sd_info ( void  )

static

Show SD card status on the OLED screen.

References CARD_TYPE_HC, CARD_TYPE_SD, CARD_TYPE_SD_COMBO, CARD_TYPE_SDIO, delay_ms, f_mount(), FR_INVALID_DRIVE, get_num_files_on_sd(), gpio_pin_is_low, LUN_ID_SD_MMC_0_MEM, sd_fs_found, sd_mmc_check(), sd_mmc_get_capacity(), sd_mmc_get_type(), sd_mmc_init(), SD_MMC_OK, sd_num_files, ssd1306_set_column_address(), ssd1306_set_page_address(), and ssd1306_write_text().

Referenced by main().

static void get_num_files_on_sd ( void  )

static

Get the number of files at the root of the SD card.

Result is stored in global sd_num_files.

References _MAX_LFN, f_opendir(), f_readdir(), FILINFO::fname, FR_OK, and sd_num_files.

Referenced by display_sd_info().

int main

(

void

)

References adc_get_channel_value(), adc_start(), app_mode_switch, at30tse_init(), at30tse_read_temperature(), board_init(), BUFFER_SIZE, configure_adc(), configure_buttons(), delay_ms, display_sd_files(), display_sd_info(), ioport_set_pin_level(), sd_listing_pos, sd_update, ssd1306_clear(), ssd1306_clear_char(), SSD1306_CMD_SET_PAGE_START_ADDRESS, ssd1306_draw_graph(), ssd1306_init(), ssd1306_set_column_address(), ssd1306_set_page_address(), ssd1306_write_command(), ssd1306_write_data(), ssd1306_write_text(), sysclk_init(), and TWI_SUCCESS.

static void ProcessButtonEvt ( uint8_t  uc_button )

static

Process Buttons Events.

Parameters

uc_button

The button number.

References app_mode_switch, sd_fs_found, sd_listing_pos, sd_num_files, and sd_update.

Referenced by Button1_Handler(), Button2_Handler(), and Button3_Handler().

static void SD_Detect_Handler ( uint32_t  id, uint32_t  mask  )

static

Handler for SD card detect rising edge interrupt.

Parameters

id	The button ID.
mask	The button mask.

References sd_fs_found, sd_listing_pos, sd_num_files, and sd_update.

Referenced by configure_buttons().

static void ssd1306_clear_char ( void  )

static

Clear one character at the cursor current position on the OLED screen.

References ssd1306_write_data().

Referenced by main().

static void ssd1306_draw_graph ( uint8_t  col, uint8_t  page, uint8_t  width, uint8_t  height, uint8_t *  tab  )

static

Draw graph on the OLED screen using the provided point array.

Parameters

col	X coordinate.
page	Y coordinate (please refer to OLED datasheet for page description).
width	Graph width.
height	Graph height.
tab	Data to draw. Must contain width elements.

References SSD1306_CMD_SET_PAGE_START_ADDRESS, ssd1306_set_column_address(), ssd1306_write_command(), and ssd1306_write_data().

Referenced by main().

volatile uint32_t app_mode = 2

volatile uint32_t app_mode_switch = 1

Referenced by main(), and ProcessButtonEvt().

FATFS fs

Referenced by chk_mounted(), demo_draw_bmpfile_init(), f_mount(), main(), and run_fatfs_test().

volatile uint32_t sd_fs_found = 0

Referenced by display_sd_info(), ProcessButtonEvt(), and SD_Detect_Handler().

volatile uint32_t sd_listing_pos = 0

Referenced by display_sd_files(), main(), ProcessButtonEvt(), and SD_Detect_Handler().

volatile uint32_t sd_num_files = 0

Referenced by display_sd_info(), get_num_files_on_sd(), ProcessButtonEvt(), and SD_Detect_Handler().

volatile uint32_t sd_update = 0

Referenced by main(), ProcessButtonEvt(), and SD_Detect_Handler().