driver_max7219_cascade.c

Go to the documentation of this file.

 
#include "driver_max7219_cascade.h"
 
static max7219_handle_t gs_handle;                                 
static max7219_cascade_t gs_cascade[MATRIX_CASCADE_LENGTH];        
uint8_t g_matrix[MATRIX_CASCADE_LENGTH][8];                        
uint8_t max7219_cascade_init(void)
{
    uint8_t res; 
    uint32_t i;
    
    /* link functions */
    DRIVER_MAX7219_LINK_INIT(&gs_handle, max7219_handle_t);
    DRIVER_MAX7219_LINK_SPI_INIT(&gs_handle, max7219_interface_spi_init);
    DRIVER_MAX7219_LINK_SPI_DEINIT(&gs_handle, max7219_interface_spi_deinit);
    DRIVER_MAX7219_LINK_SPI_WRITE_COMMAND(&gs_handle, max7219_interface_spi_write_cmd);
    DRIVER_MAX7219_LINK_SPI_WRITE(&gs_handle, max7219_interface_spi_write);
    DRIVER_MAX7219_LINK_DELAY_MS(&gs_handle, max7219_interface_delay_ms);
    DRIVER_MAX7219_LINK_DEBUG_PRINT(&gs_handle, max7219_interface_debug_print);
    
    /* max7219 init */
    res = max7219_init(&gs_handle);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: init failed.\n");
        
        return 1;
    }
    
    /* max7219 set default decode */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_DECODE;
        gs_cascade[i].data = MAX7219_CASCADE_DEFAULT_DECODE;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: set cascade failed.\n");
        (void)max7219_deinit(&gs_handle);
        
        return 1;
    }
    
    /* max7219 set default mode */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_SHUT_DOWN;
        gs_cascade[i].data = MAX7219_CASCADE_DEFAULT_MODE;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: set cascade failed.\n");
        (void)max7219_deinit(&gs_handle);
        
        return 1;
    }
    
    /* max7219 set default display test */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_DISPLAY_TEST;
        gs_cascade[i].data = MAX7219_CASCADE_DEFAULT_TEST_MODE;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: set cascade failed.\n");
        (void)max7219_deinit(&gs_handle);
        
        return 1;
    }
    
    /* max7219 set default intensity */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_INTENSITY;
        gs_cascade[i].data = MAX7219_CASCADE_DEFAULT_INTENSITY;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: set cascade failed.\n");
        (void)max7219_deinit(&gs_handle);
        
        return 1;
    }
    
    /* max7219 set default scan limit */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_SCAN_LIMIT;
        gs_cascade[i].data = MAX7219_CASCADE_DEFAULT_SCAN_LIMIT;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        max7219_interface_debug_print("max7219: set cascade failed.\n");
        (void)max7219_deinit(&gs_handle);
        
        return 1;
    }
    
    return 0;
}
 
uint8_t max7219_cascade_update(void)
{
    uint8_t res;
    uint32_t i, j;
    
    for (j = 0; j < 8; j++)
    {
        for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
        {
            gs_cascade[i].command = (max7219_cascade_command_t)(j + 1);
            gs_cascade[i].data = g_matrix[i][j];
        }
        
        /* set cascade */
        res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
        if (res != 0)
        {
            return 1;
        }
    }
    
    return 0;
}
 
uint8_t max7219_cascade_deinit(void)
{
    uint8_t res; 
    uint32_t i;
    
    /* max7219 set default mode */
    for (i = 0; i < MATRIX_CASCADE_LENGTH; i++)
    {
        gs_cascade[i].command = MAX7219_CASCADE_COMMAND_SHUT_DOWN;
        gs_cascade[i].data = MAX7219_MODE_SHUT_DOWN;
    }
    res = max7219_set_cascade(&gs_handle, (max7219_cascade_t *)gs_cascade, MATRIX_CASCADE_LENGTH);
    if (res != 0)
    {
        return 1;
    }
    res = max7219_deinit(&gs_handle);
    if (res != 0)
    {
        return 1;
    }
    
    return 0;
}