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Merge pull request #108 from jhoenicke/fastspi

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Faster SPI communication
This commit is contained in:
Pavol Rusnak 2016-08-29 10:39:09 +02:00 committed by GitHub
commit 6f342816e1
2 changed files with 8 additions and 12 deletions
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17
oled.c
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@ -82,11 +82,12 @@ static bool is_debug_mode = 0;
inline void SPISend(uint32_t base, uint8_t *data, int len)
{
int i;
delay(400);
delay(1);
for (i = 0; i < len; i++) {
spi_send(base, data[i]);
}
delay(800);
while (!(SPI_SR(base) & SPI_SR_TXE));
while ((SPI_SR(base) & SPI_SR_BSY));
}
/*
@ -364,18 +365,12 @@ void oledFrame(int x1, int y1, int x2, int y2)
void oledSwipeLeft(void)
{
int i, j, k;
for (i = 0; i < OLED_WIDTH / 4; i++) {
for (i = 0; i < OLED_WIDTH; i++) {
for (j = 0; j < OLED_HEIGHT / 8; j++) {
for (k = OLED_WIDTH / 4 - 1; k > 0; k--) {
_oledbuffer[k * 4 + 3 + j * OLED_WIDTH] = _oledbuffer[k * 4 - 1 + j * OLED_WIDTH];
_oledbuffer[k * 4 + 2 + j * OLED_WIDTH] = _oledbuffer[k * 4 - 2 + j * OLED_WIDTH];
_oledbuffer[k * 4 + 1 + j * OLED_WIDTH] = _oledbuffer[k * 4 - 3 + j * OLED_WIDTH];
_oledbuffer[k * 4 + 0 + j * OLED_WIDTH] = _oledbuffer[k * 4 - 4 + j * OLED_WIDTH];
for (k = OLED_WIDTH-1; k > 0; k--) {
_oledbuffer[j * OLED_WIDTH + k] = _oledbuffer[j * OLED_WIDTH + k - 1];
}
_oledbuffer[j * OLED_WIDTH] = 0;
_oledbuffer[j * OLED_WIDTH + 1] = 0;
_oledbuffer[j * OLED_WIDTH + 2] = 0;
_oledbuffer[j * OLED_WIDTH + 3] = 0;
}
oledRefresh();
}

3
setup.c
View File

@ -55,7 +55,7 @@ void setup(void)
gpio_set_af(GPIOA, GPIO_AF5, GPIO5 | GPIO7);
// spi_disable_crc(SPI1);
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_64, SPI_CR1_CPOL_CLK_TO_0_WHEN_IDLE, SPI_CR1_CPHA_CLK_TRANSITION_1, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_8, SPI_CR1_CPOL_CLK_TO_0_WHEN_IDLE, SPI_CR1_CPHA_CLK_TRANSITION_1, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
spi_enable_ss_output(SPI1);
// spi_enable_software_slave_management(SPI1);
// spi_set_nss_high(SPI1);
@ -71,4 +71,5 @@ void setupApp(void)
{
// hotfix for old bootloader
gpio_mode_setup(GPIOA, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO9);
spi_init_master(SPI1, SPI_CR1_BAUDRATE_FPCLK_DIV_8, SPI_CR1_CPOL_CLK_TO_0_WHEN_IDLE, SPI_CR1_CPHA_CLK_TRANSITION_1, SPI_CR1_DFF_8BIT, SPI_CR1_MSBFIRST);
}