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other/dogm128: Coding-style fixes.

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This commit is contained in:
Uwe Hermann 2011-11-12 17:45:55 +01:00
parent cd259c6eb3
commit f3f1123d07
3 changed files with 130 additions and 114 deletions
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125
examples/stm32/f1/other/dogm128/dogm128.c
View File

@ -25,45 +25,46 @@ u8 dogm128_cursor_y;
void dogm128_send_command(u8 command)
{
u32 counter;
u32 i;
gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 low for commands */
spi_send(DOGM128_SPI, command);
for (counter = 0; counter<=500; counter++) /* wait */
{}
for (i = 0; i <= 500; i++) /* Wait a bit. */
;
}
void dogm128_send_data(u8 data)
{
u32 counter;
u32 i;
gpio_set(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 high for data */
spi_send(DOGM128_SPI, data);
for (counter = 0; counter<=500; counter++) /* wait */
{}
for (i = 0; i <= 500; i++) /* Wait a bit. */
;
}
void dogm128_init()
void dogm128_init(void)
{
u32 counter;
u32 i;
/* reset the display */
gpio_clear(DOGM128_RESET_PORT, DOGM128_RESET_PIN); /* reset low for dogm128 */
for (counter = 0; counter<=60000; counter++) /* wait */
{}
gpio_set(DOGM128_RESET_PORT, DOGM128_RESET_PIN); /* reset high for dogm128 */
/* Reset the display (reset low for dogm128). */
gpio_clear(DOGM128_RESET_PORT, DOGM128_RESET_PIN);
for (i = 0; i <= 60000; i++) /* Wait a bit. */
;
for (counter = 0; counter<=60000; counter++) /* wait */
{}
/* Get the display out of reset (reset high for dogm128). */
gpio_set(DOGM128_RESET_PORT, DOGM128_RESET_PIN);
for (i = 0; i <= 60000; i++) /* Wait a bit. */
;
gpio_clear(DOGM128_A0_PORT, DOGM128_A0_PIN); /* A0 low for init */
/* tell the display that we want to start */
/* Tell the display that we want to start. */
spi_set_nss_low(DOGM128_SPI);
/* init sequence */
/* Init sequence. */
dogm128_send_command(DOGM128_DISPLAY_START_ADDRESS_BASE + 0);
dogm128_send_command(DOGM128_ADC_REVERSE);
dogm128_send_command(DOGM128_COM_OUTPUT_SCAN_NORMAL);
@ -79,46 +80,50 @@ void dogm128_init()
dogm128_send_command(0x00); /* Flashing OFF */
dogm128_send_command(DOGM128_DISPLAY_ON);
/* end transfer */
/* End transfer. */
spi_set_nss_high(DOGM128_SPI);
}
void dogm128_print_char(u8 data)
{
u8 i;
u8 page;
u8 shift;
u8 xcoord;
u8 ycoord;
u8 i, page, shift, xcoord, ycoord;
xcoord = dogm128_cursor_x;
ycoord = dogm128_cursor_y;
page = (63 - ycoord) / 8; /* the display consists of 8 lines a 8 dots each. */
/* The display consists of 8 lines a 8 dots each. */
page = (63 - ycoord) / 8;
shift = (7 -((63 - ycoord) % 8)); /* vertical shift */
/* font is 8x5 so iterate each column of the character */
/* Font is 8x5 so iterate each column of the character. */
for (i = 0; i <= 5; i++) {
/* right border reached? */
/* Right border reached? */
if ((xcoord + i) > 127)
return;
dogm128_cursor_x++;
/* 0xAA = end of character - no dots in this line */
/* 0xAA = end of character - no dots in this line. */
if (dogm128_font[data - 0x20][i] == 0xAA) {
dogm128_ram[(page * 128) + xcoord + i] &= ~(0xFF >> shift); /* clear area */
dogm128_ram[(page * 128) + xcoord + i] &=
~(0xFF >> shift); /* Clear area. */
if ((shift > 0) && (page > 0))
dogm128_ram[((page - 1) * 128) + xcoord + i] &= ~(0xFF << (8 - shift)); /* clear area */
dogm128_ram[((page - 1) * 128) + xcoord + i]
&= ~(0xFF << (8 - shift)); /* Clear area. */
return;
}
/* lower part */
dogm128_ram[(page * 128) + xcoord + i] &= ~(0xFF >> shift); /* clear area */
dogm128_ram[(page * 128) + xcoord + i] = (dogm128_font[data - 0x20][i] >> shift);
/* higher part if needed */
/* Lower part. */
dogm128_ram[(page * 128) + xcoord + i] &=
~(0xFF >> shift); /* Clear area. */
dogm128_ram[(page * 128) + xcoord + i] =
(dogm128_font[data - 0x20][i] >> shift);
/* Higher part if needed. */
if ((shift > 0) && (page > 0)) {
dogm128_ram[((page - 1) * 128) + xcoord + i] &= ~(0xFF << (8 - shift)); /* clear area */
dogm128_ram[((page - 1) * 128) + xcoord + i] = (dogm128_font[data - 0x20][i] << (8 - shift));
dogm128_ram[((page - 1) * 128) + xcoord + i] &=
~(0xFF << (8 - shift)); /* Clear area. */
dogm128_ram[((page - 1) * 128) + xcoord + i] =
(dogm128_font[data - 0x20][i] << (8 - shift));
}
}
}
@ -139,50 +144,57 @@ void dogm128_print_string(char * s)
void dogm128_set_dot(u8 xcoord, u8 ycoord)
{
dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] |= (1 << ((63 - ycoord) % 8));
dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] |=
(1 << ((63 - ycoord) % 8));
}
void dogm128_clear_dot(u8 xcoord, u8 ycoord)
{
dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] &= ~(1 << ((63 - ycoord) % 8));
dogm128_ram[(((63 - ycoord) / 8) * 128) + xcoord] &=
~(1 << ((63 - ycoord) % 8));
}
void dogm128_update_display()
void dogm128_update_display(void)
{
u8 page;
u8 column;
u8 page, column;
/* tell the display that we want to start */
/* Tell the display that we want to start. */
spi_set_nss_low(DOGM128_SPI);
for (page = 0; page <= 7; page++) {
dogm128_send_command(0xB0 + page); /* set page */
dogm128_send_command(0x10); /* set column upper address to 0 */
dogm128_send_command(0x00); /* set column lower address to 0 */
dogm128_send_command(0xB0 + page); /* Set page. */
dogm128_send_command(0x10); /* Set column upper address to 0. */
dogm128_send_command(0x00); /* Set column lower address to 0. */
for (column = 0; column <= 127; column++) {
for (column = 0; column <= 127; column++)
dogm128_send_data(dogm128_ram[(page * 128) + column]);
}
}
spi_set_nss_high(DOGM128_SPI);
}
void dogm128_clear()
void dogm128_clear(void)
{
u16 i;
int i;
for (i = 0; i<=1023; i++) {
for (i = 0; i <= 1023; i++)
dogm128_ram[i] = 0;
}
dogm128_update_display();
}
/* This is a non-monospace font definition (upside down for better handling).
* 0xAA is the end of the character so its not space efficient in your memory, but on your display.
* We are starting with " " as the first printable character at 0x20, so we have to substract 0x20 later.
* Its the only defined to 127/0x7F so if you have german umlauts or other special characters from above
* you have to expand this definition a little bit. */
/*
* This is a non-monospace font definition (upside down for better handling).
* 0xAA is the end of the character so it's not space efficient in your memory,
* but on your display.
*
* We are starting with " " as the first printable character at 0x20, so we
* have to substract 0x20 later.
*
* Its the only defined to 127/0x7F so if you have German umlauts or other
* special characters from above you have to expand this definition a
* little bit.
*/
const u8 dogm128_font[96][6] = {
@ -286,6 +298,5 @@ const u8 dogm128_font[96][6] = {
/* 7C | */ {0x7E, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
/* 7D } */ {0x41, 0x36, 0x08, 0xAA, 0xAA, 0xAA},
/* 7E ~ */ {0x20, 0x10, 0x20, 0x10, 0xAA, 0xAA},
/* 7F DEL */ {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
/* 7F DEL */ {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
};

12
examples/stm32/f1/other/dogm128/dogm128.h
View File

@ -24,11 +24,13 @@
#include <libopencm3/stm32/f1/gpio.h>
#include <libopencm3/stm32/spi.h>
/* PB10 GPIO - ~RESET
/*
* PB10 GPIO - ~RESET
* PB12 SPI2_NSS - ~CS1
* PB13 SPI2_SCK - SCL
* PB14 SPI2_MISO - A0
* PB15 SPI2_MOSI - SI */
* PB15 SPI2_MOSI - SI
*/
#define DOGM128_SPI SPI2
#define DOGM128_RESET_PIN GPIO10
@ -79,8 +81,8 @@ void dogm128_print_string(char * s);
void dogm128_set_dot(u8 xcoord, u8 ycoord);
void dogm128_clear_dot(u8 xcoord, u8 ycoord);
void dogm128_send_data(u8 data);
void dogm128_init();
void dogm128_update_display();
void dogm128_clear();
void dogm128_init(void);
void dogm128_update_display(void);
void dogm128_clear(void);
#endif

27
examples/stm32/f1/other/dogm128/main.c
View File

@ -40,7 +40,7 @@ void gpio_setup(void)
/* A0 of DOGM128 */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO14);
/*reset of DOGM128 */
/* Reset of DOGM128 */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO10);
@ -53,22 +53,26 @@ void gpio_setup(void)
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO15);
}
void spi_setup()
void spi_setup(void)
{
/* the DOGM128 display is connected to SPI2, so initialise it correctly */
/* The DOGM128 display is connected to SPI2, so initialise it. */
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_SPI2EN);
spi_set_unidirectional_mode(DOGM128_SPI); /* we want to send only */
spi_disable_crc(DOGM128_SPI); /* no CRC for this slave */
spi_set_unidirectional_mode(DOGM128_SPI); /* We want to send only. */
spi_disable_crc(DOGM128_SPI); /* No CRC for this slave. */
spi_set_dff_8bit(DOGM128_SPI); /* 8-bit dataword-length */
spi_set_full_duplex_mode(DOGM128_SPI); /* not receive-only */
spi_enable_software_slave_management(DOGM128_SPI); /* we want to handle the CS signal in software */
spi_set_full_duplex_mode(DOGM128_SPI); /* Not receive-only */
/* We want to handle the CS signal in software. */
spi_enable_software_slave_management(DOGM128_SPI);
spi_set_nss_high(DOGM128_SPI);
spi_set_baudrate_prescaler(DOGM128_SPI, SPI_CR1_BR_FPCLK_DIV_256); /* PCLOCK/256 as clock */
spi_set_master_mode(DOGM128_SPI); /* we want to control everything and generate the clock -> master */
spi_set_clock_polarity_1(DOGM128_SPI); /* sck idle state high */
spi_set_clock_phase_1(DOGM128_SPI); /* bit is taken on the second (rising edge) of sck */
/* PCLOCK/256 as clock. */
spi_set_baudrate_prescaler(DOGM128_SPI, SPI_CR1_BR_FPCLK_DIV_256);
/* We want to control everything and generate the clock -> master. */
spi_set_master_mode(DOGM128_SPI);
spi_set_clock_polarity_1(DOGM128_SPI); /* SCK idle state high. */
/* Bit is taken on the second (rising edge) of SCK. */
spi_set_clock_phase_1(DOGM128_SPI);
spi_enable_ss_output(DOGM128_SPI);
spi_enable(DOGM128_SPI);
}
@ -107,4 +111,3 @@ int main(void)
return 0;
}