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Led6 example fixed.

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This commit is contained in:
Serge Vakulenko
2015-05-19 20:47:30 -07:00
parent 0c22adf6bf
commit d5599ae63a
1 changed files with 37 additions and 54 deletions
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91
share/examples/c/lcd6.c
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@@ -64,32 +64,32 @@
* Signal assignment.
* LED modulee is connected to pins 16,17,18 of Fubarino SD board.
*
* Pin PIC32 LED module
* ---------------
* 16 RE0 CS
* 17 RE1 WR
* 18 RE2 DATA
* Fubarino PIC32 LED module
* --------------------------
* 16 RE0 CS
* 17 RE1 WR
* 18 RE2 DATA
*/
#define gpio_cs_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 0)
#define gpio_cs_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 0)
#define gpio_wr_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 1)
#define gpio_wr_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 1)
#define gpio_data_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 2)
#define gpio_data_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 2)
#define gpio_cs_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 0)
#define gpio_cs_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 0)
#define gpio_wr_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 1)
#define gpio_wr_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 1)
#define gpio_data_clear() ioctl(gpio, GPIO_PORTE | GPIO_CLEAR, 1 << 2)
#define gpio_data_set() ioctl(gpio, GPIO_PORTE | GPIO_SET, 1 << 2)
/*
* HT1621 commands
*/
#define HT_SYS_DIS 0x00 /* Turn off system osc and bias generator */
#define HT_SYS_EN 0x01 /* Turn on system oscillator */
#define HT_LCD_OFF 0x02 /* Turn off LCD bias generator */
#define HT_LCD_ON 0x03 /* Turn on LCD bias generator */
#define HT_CLOCK_XTAL 0x14 /* Crystal 32kHz */
#define HT_CLOCK_RC 0x18 /* On-chip RC oscillator 256kHz */
#define HT_CLOCK_EXT 0x1c /* External clock */
#define HT_BIAS_1_3 0x21 /* LCD 1/3 bias option, 2 commons default */
#define HT_COMMONS_3 0x04 /* 3 commons option */
#define HT_COMMONS_4 0x08 /* 4 commons option */
#define HT_SYS_DIS 0x00 /* Turn off system osc and bias generator */
#define HT_SYS_EN 0x01 /* Turn on system oscillator */
#define HT_LCD_OFF 0x02 /* Turn off LCD bias generator */
#define HT_LCD_ON 0x03 /* Turn on LCD bias generator */
#define HT_CLOCK_XTAL 0x14 /* Crystal 32kHz */
#define HT_CLOCK_RC 0x18 /* On-chip RC oscillator 256kHz */
#define HT_CLOCK_EXT 0x1c /* External clock */
#define HT_BIAS_1_3 0x21 /* LCD 1/3 bias option, 2 commons default */
#define HT_COMMONS_3 0x04 /* 3 commons option */
#define HT_COMMONS_4 0x08 /* 4 commons option */
/*
* Mapping of symbols to segments.
@@ -105,24 +105,17 @@ const char char_to_segm[] = {
0x0F, 0x6D, 0x02, 0x00,
};
/*
* File descriptor for GPIO driver.
*/
int gpio;
/*
* Spin for a few microseconds.
* Suspend the process for some amount of milliseconds.
*/
void udelay(unsigned duration)
void mdelay(unsigned msec)
{
struct timeval t0, now;
int usec;
gettimeofday(&t0, 0);
for (;;) {
gettimeofday(&now, 0);
usec = now.tv_usec - t0.tv_usec;
usec += (now.tv_sec - t0.tv_sec) * 1000000;
if (usec >= duration)
break;
}
usleep(msec * 1000);
}
/*
@@ -135,13 +128,11 @@ void ht_send(int nbits, int data)
data <<= (8 - nbits);
gpio_wr_clear();
while (nbits-- > 0) {
udelay(5);
if (data & 0x80)
gpio_data_set();
else
gpio_data_clear();
gpio_wr_set();
udelay(5);
gpio_wr_clear();
data <<= 1;
}
@@ -182,7 +173,7 @@ void lcd_init()
exit(-1);
}
/* Configure pins as outputs. */
/* Configure pins RE0-RE2 as outputs. */
ioctl(gpio, GPIO_PORTE | GPIO_CONFOUT, 0x07);
gpio_cs_set();
gpio_wr_clear();
@@ -221,7 +212,7 @@ void lcd_enable(int on)
* Display data.
* val - Data to be displayed, 0-999999
* dot - Display decimal dot, 0-3
* bat - Battery level, 0-7
* bat - Battery level, 0-3
*/
void lcd_display(unsigned val, int dot, int bat)
{
@@ -249,11 +240,11 @@ void lcd_display(unsigned val, int dot, int bat)
default:
break;
}
if (bat & 1)
if (bat > 0)
byte[3] |= 1 << 7;
if (bat & 2)
if (bat > 1)
byte[4] |= 1 << 7;
if (bat & 3)
if (bat > 2)
byte[5] |= 1 << 7;
for (i=0; i<6; i++) {
@@ -261,14 +252,6 @@ void lcd_display(unsigned val, int dot, int bat)
}
}
/*
* Suspend the process for some amount of milliseconds.
*/
void mdelay(unsigned msec)
{
usleep(msec * 1000);
}
int main()
{
int i;
@@ -278,13 +261,13 @@ int main()
/* Blink all segments twice. */
lcd_clear(0xff);
mdelay(300);
mdelay(1000);
lcd_clear(0);
mdelay(300);
mdelay(1000);
lcd_clear(0xff);
mdelay(300);
mdelay(1000);
lcd_clear(0);
mdelay(300);
mdelay(1000);
/* Show all characters on all segments. */
for (i=0; i<sizeof(char_to_segm); i++) {
@@ -296,7 +279,7 @@ int main()
/* Display counter 0 to 999999. */
for (;;) {
for (i=0; i<999999; i++) {
lcd_display(i, 1, i/10);
lcd_display(i, i/10%4, i/10%4);
mdelay(100);
}
}