203 lines
6.1 KiB
C
203 lines
6.1 KiB
C
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
/**
|
|
* Demo: MAX7219 8x8 LED Matrix 4 in 1
|
|
* Board: STC8H1K08
|
|
*
|
|
* P1.3 -> DIN
|
|
* P1.5 -> SCLK
|
|
* P1.7 -> CS
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* PlatformIO configuration example
|
|
|
|
[env:stc8g1k08]
|
|
platform = intel_mcs51
|
|
board = stc8g1k08
|
|
build_flags =
|
|
-D__CONF_FOSC=36864000UL
|
|
-D__CONF_MCU_MODEL=MCU_MODEL_STC8G1K08
|
|
-D__CONF_CLKDIV=0x00
|
|
-D__CONF_IRCBAND=0x01
|
|
-D__CONF_VRTRIM=0x20
|
|
-D__CONF_IRTRIM=0xA3
|
|
-D__CONF_LIRTRIM=0x03
|
|
upload_protocol = custom
|
|
upload_port = /dev/ttyUSB0
|
|
upload_speed = 115200
|
|
upload_flags =
|
|
-p$UPLOAD_PORT
|
|
-s$UPLOAD_SPEED
|
|
-e
|
|
upload_command = ${platformio.packages_dir}/tool-stc8prog/stc8prog $UPLOAD_FLAGS -f $SOURCE
|
|
|
|
*/
|
|
|
|
#include "fw_hal.h"
|
|
|
|
#define MAX7219_CS P17
|
|
#define MAX7219_BLOCKS 4
|
|
|
|
#define DECODE_MODE 0x09
|
|
#define INTENSITY 0x0A
|
|
#define SCAN_LIMIT 0x0B
|
|
#define SHUT_DOWN 0x0C
|
|
#define DISPLAY_TEST 0x0F
|
|
|
|
const uint8_t numbers[]={
|
|
0x3e,0x63,0x63,0x7f,0x63,0x63,0x63,0x63, //A
|
|
0x7e,0x63,0x63,0x7e,0x63,0x63,0x63,0x7e, //B
|
|
0x3e,0x63,0x63,0x60,0x60,0x63,0x63,0x3e, //C
|
|
0x7e,0x63,0x63,0x63,0x63,0x63,0x63,0x7e, //D
|
|
0x7f,0x60,0x60,0x7f,0x60,0x60,0x60,0x7f, //E
|
|
0x7f,0x60,0x60,0x7e,0x60,0x60,0x60,0x60, //F
|
|
0x3e,0x63,0x63,0x60,0x67,0x63,0x63,0x3e, //G
|
|
0x63,0x63,0x63,0x7f,0x63,0x63,0x63,0x63, //H
|
|
0x3f,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x3f, //I
|
|
0x1f,0x06,0x06,0x06,0x06,0x66,0x66,0x3c, //J
|
|
0x63,0x66,0x6c,0x78,0x6c,0x66,0x63,0x61, //K
|
|
0x60,0x60,0x60,0x60,0x60,0x60,0x60,0x7f, //L
|
|
0x63,0x77,0x7f,0x6b,0x63,0x63,0x63,0x63, //M
|
|
0x63,0x63,0x73,0x7b,0x6f,0x67,0x63,0x63, //N
|
|
0x3e,0x63,0x63,0x63,0x63,0x63,0x63,0x3e, //O
|
|
0x7e,0x63,0x63,0x63,0x7e,0x60,0x60,0x60, //P
|
|
0x3c,0x66,0x66,0x66,0x66,0x6e,0x66,0x3f, //Q
|
|
0x7e,0x63,0x63,0x63,0x7e,0x6c,0x66,0x63, //R
|
|
0x3e,0x63,0x63,0x60,0x3e,0x03,0x63,0x3e, //S
|
|
0x3f,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c,0x0c, //T
|
|
0x63,0x63,0x63,0x63,0x63,0x63,0x63,0x3e, //U
|
|
0x63,0x63,0x63,0x63,0x63,0x36,0x1c,0x08, //V
|
|
0x63,0x63,0x63,0x63,0x6b,0x7f,0x77,0x63, //W
|
|
0x63,0x63,0x36,0x1c,0x1c,0x36,0x63,0x63, //X
|
|
0x33,0x33,0x33,0x33,0x1e,0x0c,0x0c,0x0c, //Y
|
|
0x7f,0x03,0x06,0x0c,0x18,0x30,0x60,0x7f, //Z
|
|
0x3e,0x63,0x73,0x6b,0x67,0x63,0x63,0x3e, //0
|
|
0x0c,0x1c,0x3c,0x0c,0x0c,0x0c,0x0c,0x3f, //1
|
|
0x3e,0x63,0x63,0x06,0x0c,0x18,0x30,0x7f, //2
|
|
0x3e,0x63,0x63,0x0e,0x03,0x63,0x63,0x3e, //3
|
|
0x06,0x0e,0x1e,0x36,0x66,0x7f,0x06,0x06, //4
|
|
0x7f,0x60,0x60,0x7e,0x03,0x03,0x03,0x7e, //5
|
|
0x3e,0x63,0x60,0x7e,0x63,0x63,0x63,0x3e, //6
|
|
0x7f,0x03,0x03,0x06,0x0c,0x18,0x18,0x18, //7
|
|
0x3e,0x63,0x63,0x3e,0x63,0x63,0x63,0x3e, //8
|
|
0x3e,0x63,0x63,0x63,0x3f,0x03,0x63,0x3e, //9
|
|
};
|
|
|
|
uint8_t val[MAX7219_BLOCKS];
|
|
uint8_t character_len = sizeof(numbers) / 8;
|
|
|
|
void MAX7219_singeWrite(uint8_t index, uint8_t addr, uint8_t dat)
|
|
{
|
|
index = index % MAX7219_BLOCKS;
|
|
MAX7219_CS = 0;
|
|
SPI_TxRx(addr);
|
|
SPI_TxRx(dat);
|
|
while(index--)
|
|
{
|
|
SPI_TxRx(addr);
|
|
SPI_TxRx(dat);
|
|
}
|
|
MAX7219_CS = 1;
|
|
}
|
|
|
|
void MAX7219_multiWrite(uint8_t addr, uint8_t len, uint8_t* dat)
|
|
{
|
|
MAX7219_CS = 0;
|
|
while (len--)
|
|
{
|
|
SPI_TxRx(addr);
|
|
SPI_TxRx(*dat++);
|
|
}
|
|
MAX7219_CS = 1;
|
|
}
|
|
|
|
void MAX7219_init(void)
|
|
{
|
|
for (uint8_t i = 0; i < MAX7219_BLOCKS; i++)
|
|
{
|
|
MAX7219_singeWrite(i, SHUT_DOWN, 0x01); // 0x00:shutdown, 0x01:normal
|
|
MAX7219_singeWrite(i, DECODE_MODE, 0x00); // Bypass code B decoder, no-decode operation
|
|
MAX7219_singeWrite(i, SCAN_LIMIT, 0x07); // Scan-limit, 0:1-digit, 1:2-digits, ..., 7:8-digits
|
|
MAX7219_singeWrite(i, INTENSITY, 0x00); // 0x00:min, 0xFF:max
|
|
MAX7219_singeWrite(i, DISPLAY_TEST, 0x00); // 0x00:normal, 0x01:test mode
|
|
}
|
|
}
|
|
|
|
void SPI_init(void)
|
|
{
|
|
// MAX7219 can work with frequency up to 20MHz
|
|
SPI_SetClockPrescaler(SPI_ClockPreScaler_4);
|
|
// Clock idles low
|
|
SPI_SetClockPolarity(HAL_State_OFF);
|
|
// Data transfer is driven by lower SS pin
|
|
SPI_SetClockPhase(SPI_ClockPhase_LeadingEdge);
|
|
// MSB first
|
|
SPI_SetDataOrder(SPI_DataOrder_MSB);
|
|
// Define the output pins
|
|
SPI_SetPort(SPI_AlterPort_P12P54_P13_P14_P15);
|
|
// Ignore SS pin, use MSTR to swith between master/slave mode
|
|
SPI_IgnoreSlaveSelect(HAL_State_ON);
|
|
// Master mode
|
|
SPI_SetMasterMode(HAL_State_ON);
|
|
// Start SPI
|
|
SPI_SetEnabled(HAL_State_ON);
|
|
}
|
|
|
|
void main()
|
|
{
|
|
/**
|
|
* ________________________
|
|
* | |
|
|
* |_______________________|
|
|
* A B
|
|
*
|
|
* pos: point to the bit for boundary A
|
|
* lpos: point to the bit for boundary B
|
|
*/
|
|
uint16_t pos = 0, lpos = 0;
|
|
uint8_t i, j, cpos = 0, bpos = 0, tcpos = 0;
|
|
|
|
SYS_SetClock();
|
|
// Configure GPIO pins before SPI and device
|
|
// DIN(P13)
|
|
GPIO_P1_SetMode(GPIO_Pin_3, GPIO_Mode_InOut_QBD);
|
|
// SCLK(P15), CS(P17)
|
|
GPIO_P1_SetMode(GPIO_Pin_5|GPIO_Pin_7, GPIO_Mode_Output_PP);
|
|
// Configure SPI and device
|
|
SPI_init();
|
|
MAX7219_init();
|
|
|
|
while(1)
|
|
{
|
|
lpos = pos + sizeof(numbers) - MAX7219_BLOCKS * 8;
|
|
cpos = lpos / 8; // char position
|
|
bpos = lpos % 8; // bit position
|
|
for (i = 0; i < 8; i++) // fill each line
|
|
{
|
|
for (j = 0; j < MAX7219_BLOCKS; j++)
|
|
{
|
|
tcpos = (cpos + j) % character_len;
|
|
val[j] = numbers[tcpos * 8 + i] << bpos;
|
|
tcpos = (cpos + j + 1) % character_len;
|
|
val[j] |= numbers[tcpos * 8 + i] >> (8 - bpos);
|
|
}
|
|
MAX7219_multiWrite(i + 1, MAX7219_BLOCKS, val);
|
|
}
|
|
pos = (pos + 1) % sizeof(numbers);
|
|
SYS_Delay(50);
|
|
}
|
|
} |