EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

stm32-h103 examples: Cosmetic and coding style fixes.

Browse Source
This commit is contained in:
Uwe Hermann
2011-11-03 00:57:46 +01:00
parent a3ce2924df
commit 44bf853e6e
16 changed files with 317 additions and 363 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
examples/stm32/f1/stm32-h103/led_stripe/led_stripe.c
View File

@@ -18,14 +18,13 @@
*/
/*
* This example is implementing the protocol of ZJ168 addressable led
* This example is implementing the protocol of ZJ168 addressable LED
* strips. These strips use the LPD6803 controller. You may be able to
* find the datasheet here:
* http://www.adafruit.com/datasheets/LPD6803.pdf
*/
#include <stdlib.h>
#include <libopencm3/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
@@ -68,10 +67,9 @@ void clock_setup(void)
{
rcc_clock_setup_in_hse_8mhz_out_72mhz();
/* Enable GPIOC clock. */
/* Enable GPIOB and GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
}
void gpio_setup(void)
@@ -79,28 +77,33 @@ void gpio_setup(void)
/* Set GPIO12 (in GPIO port C) to 'output push-pull'. */
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO12);
/* Set GPIO13 (in GPIO port B) to 'output push-pull'. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
/* Set GPIO15 (in GPIO port B) to 'output push-pull'. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
}
void send_colors(struct color *colors, int count) {
void send_colors(struct color *colors, int count)
{
int i, k;
/* initialize spi pins */
/* Initialize SPI pins. */
SCLK(0);
MOSI(0);
/* start frame */
for (i=0; i<32; i++) {
/* Start frame */
for (i = 0; i < 32; i++) {
SCLK(1);
SMALL_DELAY();
SCLK(0);
SMALL_DELAY();
}
/* color cell output */
/* Color cell output */
for (k = 0; k < count; k++) {
/* Start bit */
MOSI(1);
@@ -110,7 +113,7 @@ void send_colors(struct color *colors, int count) {
SMALL_DELAY();
/* Blue */
for (i=0; i<5; i++) {
for (i = 0; i < 5; i++) {
MOSI(((colors[k].b & ((1 << 4) >> i)) != 0));
SCLK(1);
SMALL_DELAY();
@@ -118,7 +121,7 @@ void send_colors(struct color *colors, int count) {
SMALL_DELAY();
}
/* Red */
for (i=0; i<5; i++) {
for (i = 0; i < 5; i++) {
MOSI(((colors[k].r & ((1 << 4) >> i)) != 0));
SCLK(1);
SMALL_DELAY();
@@ -126,7 +129,7 @@ void send_colors(struct color *colors, int count) {
SMALL_DELAY();
}
/* Green */
for (i=0; i<5; i++) {
for (i = 0; i < 5; i++) {
MOSI(((colors[k].g & ((1 << 4) >> i)) != 0));
SCLK(1);
SMALL_DELAY();
@@ -137,7 +140,7 @@ void send_colors(struct color *colors, int count) {
/* End frame */
MOSI(0);
for (k=0; k < count; k++) {
for (k = 0; k < count; k++) {
SCLK(1);
SMALL_DELAY();
SCLK(0);
@@ -145,18 +148,19 @@ void send_colors(struct color *colors, int count) {
}
}
void reset_colors(struct color *colors, int count) {
void reset_colors(struct color *colors, int count)
{
int i;
for (i=0; i<count; i++) {
for (i = 0; i < count; i++) {
colors[i].r = 0;
colors[i].g = 0;
colors[i].b = 0;
}
}
void init_colors(struct color *colors, int count) {
void init_colors(struct color *colors, int count)
{
colors[0].r = 0x1F;
colors[0].g = 0;
colors[0].b = 0;
@@ -170,28 +174,29 @@ void init_colors(struct color *colors, int count) {
count = count;
}
void step_colors(struct color *colors, int count) {
void step_colors(struct color *colors, int count)
{
int i;
struct color tmp_color1;
struct color tmp_color2;
/* random blinking */
/*
for (i=0; i<count; i++) {
colors[i].r = rand()&0x01;
colors[i].g = rand()&0x01;
colors[i].b = rand()&0x01;
#if 0
/* Random blinking. */
for (i = 0; i < count; i++) {
colors[i].r = rand() & 0x01;
colors[i].g = rand() & 0x01;
colors[i].b = rand() & 0x01;
}
*/
/* generate next colors */
#endif
/* Generate next colors. */
tmp_color1.r = colors[0].r;
tmp_color1.g = colors[0].g;
tmp_color1.b = colors[0].b;
colors[0].r = colors[count-1].r;
colors[0].g = colors[count-1].g;
colors[0].b = colors[count-1].b;
for(i=1; i<count; i++) {
colors[0].r = colors[count - 1].r;
colors[0].g = colors[count - 1].g;
colors[0].b = colors[count - 1].b;
for (i = 1; i < count; i++) {
tmp_color2.r = colors[i].r;
tmp_color2.g = colors[i].g;
tmp_color2.b = colors[i].b;
@@ -202,7 +207,6 @@ void step_colors(struct color *colors, int count) {
tmp_color1.g = tmp_color2.g;
tmp_color1.b = tmp_color2.b;
}
}
int main(void)
@@ -224,10 +228,8 @@ int main(void)
step_colors(colors, COLOR_COUNT);
/* Wait a little */
for (i = 0; i < 1000000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;