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/*
* Copyright (c) 2006-2026, RT-Thread Development Team
* Copyright 2024-2025 NXP
*
* SPDX-License-Identifier: Apache-2.0
*
* Board-level SLCD helper for FRDM-MCXA366, built on NXP fsl_slcd.
*
* Segment mapping (8 bits per front-plane pair in num_matrix):
* 7 6 5 4 | 3 2 1 0
* E G F P | D C B A
*
* Front plane: digit6..digit1 use LCD_P27/P26 .. LCD_P17/P16
* Back plane: COM1..COM4 use LCD_P28..LCD_P31
*/
#include <rtthread.h>
#ifdef BSP_USING_SLCD
#include "drv_slcd.h"
#include "pin_mux.h"
#include "fsl_clock.h"
#include "fsl_reset.h"
#include "fsl_slcd.h"
#define BOARD_SLCD LCD0
#define SEGA 0x0001u
#define SEGB 0x0002u
#define SEGC 0x0004u
#define SEGD 0x0008u
#define SEGP 0x0100u
#define SEGF 0x0200u
#define SEGG 0x0400u
#define SEGE 0x0800u
/* Low byte -> pin_lo (A/B/C/D), high byte -> pin_hi (P/F/G/E). */
static const uint16_t num_matrix[] = {
SEGA | SEGB | SEGC | SEGD | SEGE | SEGF, /* 0 */
SEGB | SEGC, /* 1 */
SEGA | SEGB | SEGG | SEGE | SEGD, /* 2 */
SEGA | SEGB | SEGG | SEGC | SEGD, /* 3 */
SEGF | SEGG | SEGB | SEGC, /* 4 */
SEGA | SEGF | SEGG | SEGC | SEGD, /* 5 */
SEGA | SEGF | SEGE | SEGD | SEGC | SEGG, /* 6 */
SEGA | SEGB | SEGC, /* 7 */
SEGA | SEGB | SEGC | SEGD | SEGE | SEGF | SEGG, /* 8 */
SEGA | SEGF | SEGG | SEGB | SEGC | SEGD, /* 9 */
0 /* space / blank */
};
/* digit 1..6 -> low front-plane pin (high pin is low+1) */
static const uint8_t digit_pin_lo[] = { 0, 16, 18, 20, 22, 24, 26 };
/* SLCD_Px point -> front-plane pin (phase A / SEGP) */
static const uint8_t point_pin[] = {
23, /* P1 */
21, /* P2 */
19, /* P3 */
25, /* P4 */
27, /* P5 */
17, /* P6 */
};
static rt_bool_t g_slcd_inited = RT_FALSE;
static void slcd_set_digit_segments(uint8_t digit, uint16_t seg)
{
uint8_t pin_lo;
if ((digit < 1U) || (digit > 6U))
{
return;
}
pin_lo = digit_pin_lo[digit];
SLCD_SetFrontPlaneSegments(BOARD_SLCD, pin_lo, (uint8_t)(seg & 0xFFU));
SLCD_SetFrontPlaneSegments(BOARD_SLCD, pin_lo + 1U, (uint8_t)((seg >> 8) & 0xFFU));
}
int rt_hw_slcd_init(void)
{
slcd_config_t config;
if (g_slcd_inited)
{
return RT_EOK;
}
BOARD_InitSLCDPins();
/* SLCD function clock on MCXA366. */
CLOCK_SetupFRO16KClocking(kCLKE_16K_COREMAIN);
RESET_ReleasePeripheralReset(kSLCD0_RST_SHIFT_RSTn);
SLCD_GetDefaultConfig(&config);
config.dutyCycle = kSLCD_1Div4DutyCycle;
config.slcdLowPinEnabled = 0xFFFF0000U; /* LCD_P16~P31 */
config.slcdHighPinEnabled = 0U;
config.backPlaneLowPin = 0xF0000000U; /* LCD_P28~P31 */
config.backPlaneHighPin = 0U;
config.faultConfig = RT_NULL;
SLCD_Init(BOARD_SLCD, &config);
SLCD_SetBackPlanePhase(BOARD_SLCD, 28U, kSLCD_PhaseAActivate);
SLCD_SetBackPlanePhase(BOARD_SLCD, 29U, kSLCD_PhaseBActivate);
SLCD_SetBackPlanePhase(BOARD_SLCD, 30U, kSLCD_PhaseCActivate);
SLCD_SetBackPlanePhase(BOARD_SLCD, 31U, kSLCD_PhaseDActivate);
SLCD_StartDisplay(BOARD_SLCD);
g_slcd_inited = RT_TRUE;
return RT_EOK;
}
void rt_hw_slcd_display_all(void)
{
uint8_t pin;
for (pin = 16U; pin <= 27U; pin++)
{
SLCD_SetFrontPlaneSegments(BOARD_SLCD, pin,
(uint8_t)(kSLCD_PhaseAActivate | kSLCD_PhaseBActivate |
kSLCD_PhaseCActivate | kSLCD_PhaseDActivate));
}
}
void rt_hw_slcd_clear(void)
{
uint8_t pin;
for (pin = 16U; pin <= 27U; pin++)
{
SLCD_SetFrontPlaneSegments(BOARD_SLCD, pin, (uint8_t)kSLCD_NoPhaseActivate);
}
}
void rt_hw_slcd_display_num(uint8_t digit, uint8_t num)
{
uint16_t seg = (num <= 9U) ? num_matrix[num] : num_matrix[10];
slcd_set_digit_segments(digit, seg);
}
void rt_hw_slcd_display_string(const char *str)
{
uint8_t digit;
uint8_t num;
uint8_t points = 0U;
if (str == RT_NULL)
{
return;
}
for (digit = 6U; digit >= 1U; digit--)
{
while ((*str == ':') || (*str == '.'))
{
if (*str == ':')
{
points |= SLCD_COLON;
}
else
{
points |= SLCD_DOT;
}
str++;
}
if (*str == '\0')
{
num = 10U;
}
else if (*str == ' ')
{
num = 10U;
str++;
}
else
{
num = (uint8_t)(*str - '0');
str++;
if (num > 9U)
{
num = 10U;
}
}
rt_hw_slcd_display_num(digit, num);
if (digit == 1U)
{
break;
}
}
if (points != 0U)
{
rt_hw_slcd_display_point(points);
}
}
void rt_hw_slcd_display_time(uint8_t hour, uint8_t minute)
{
char buf[8];
if (hour > 99U)
{
hour = 99U;
}
if (minute > 99U)
{
minute = 99U;
}
rt_snprintf(buf, sizeof(buf), "%02u:%02u", hour, minute);
rt_hw_slcd_clear();
rt_hw_slcd_display_string(buf);
}
void rt_hw_slcd_display_point(uint8_t point)
{
uint8_t i;
for (i = 0U; i < 6U; i++)
{
if (point & (1U << i))
{
SLCD_SetFrontPlaneOnePhase(BOARD_SLCD, point_pin[i], kSLCD_PhaseAIndex, true);
}
}
}
#endif /* BSP_USING_SLCD */
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