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Added spi_mode and max_speed to user data

This commit is contained in:
servadmin 2021-11-17 19:20:02 -05:00
parent df7f3b3023
commit bffa798ad5
5 changed files with 23 additions and 11 deletions
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5
sys/arm-linux/examples/c-examples/u8g2_4wire_hw_spi/u8g2_4wire_hw_spi.c
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@ -9,6 +9,9 @@
// CS pin is controlled by linux spi driver, thus not defined here, but need to be wired
#define OLED_SPI_PIN_CS U8X8_PIN_NONE
#define SPI_MODE 0
#define SPI_MAX_SPEED 500000
int main(void) {
u8g2_t u8g2;
@ -17,7 +20,7 @@ int main(void) {
u8g2_Setup_ssd1306_128x64_noname_f(&u8g2, U8G2_R0,
u8x8_byte_arm_linux_hw_spi, u8x8_arm_linux_gpio_and_delay);
init_spi_hw(&u8g2, GPIO_CHIP_NUM, SPI_BUS, OLED_SPI_PIN_DC,
OLED_SPI_PIN_RES, OLED_SPI_PIN_CS);
OLED_SPI_PIN_RES, OLED_SPI_PIN_CS, SPI_MODE, SPI_MAX_SPEED);
u8g2_InitDisplay(&u8g2);
u8g2_ClearBuffer(&u8g2);

4
sys/arm-linux/examples/cpp-examples/u8g2_4wire_hw_spi/u8g2_4wire_hw_spi.cpp
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@ -6,6 +6,8 @@
#define SPI_BUS 0x10
#define OLED_SPI_PIN_RES 199
#define OLED_SPI_PIN_DC 198
#define SPI_MODE 0
#define SPI_MAX_SPEED 500000
// CS pin is controlled by linux spi driver
#define OLED_SPI_PIN_CS U8X8_PIN_NONE
@ -19,7 +21,7 @@ static U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0,
int main() {
u8g2.initSpiHw(GPIO_CHIP_NUM, SPI_BUS, OLED_SPI_PIN_DC, OLED_SPI_PIN_RES,
OLED_SPI_PIN_CS);
OLED_SPI_PIN_CS, SPI_MODE, SPI_MAX_SPEED);
u8g2.begin();
u8g2.setFont(u8g2_font_6x13_tr); // choose a suitable font
u8g2.drawStr(1, 18, "U8g2 on HW SPI"); // write something to the internal memory

13
sys/arm-linux/port/U8g2lib.h
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@ -136,15 +136,16 @@ public:
void initI2cHw(uint8_t bus) {
init_i2c_hw(&u8g2, bus);
}
void initI2cSw(uint8_t gpio_chip, uint8_t scl, uint8_t sda,
uint8_t res, unsigned long delay) {
void initI2cSw(uint8_t gpio_chip, uint8_t scl, uint8_t sda, uint8_t res,
unsigned long delay) {
init_i2c_sw(&u8g2, gpio_chip, scl, sda, res, delay);
}
void initSpiHw(uint8_t gpio_chip, uint8_t bus, uint8_t dc, uint8_t res, uint8_t cs) {
init_spi_hw(&u8g2, gpio_chip, bus, dc, res, cs);
void initSpiHw(uint8_t gpio_chip, uint8_t bus, uint8_t dc, uint8_t res,
uint8_t cs, unsigned int spi_mode, uint32_t max_speed) {
init_spi_hw(&u8g2, gpio_chip, bus, dc, res, cs, spi_mode, max_speed);
}
void initSpiSw(uint8_t gpio_chip, uint8_t dc, uint8_t res,
uint8_t mosi, uint8_t sck, uint8_t cs, unsigned long delay) {
void initSpiSw(uint8_t gpio_chip, uint8_t dc, uint8_t res, uint8_t mosi,
uint8_t sck, uint8_t cs, unsigned long delay) {
init_spi_sw(&u8g2, gpio_chip, dc, res, mosi, sck, cs, delay);
}
void doneUserData(void) {

6
sys/arm-linux/port/u8g2port.c
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@ -80,10 +80,12 @@ void init_i2c_sw(u8g2_t *u8g2, uint8_t gpio_chip, uint8_t scl, uint8_t sda,
* Allocate user_data_struct for hardware SPI.
*/
void init_spi_hw(u8g2_t *u8g2, uint8_t gpio_chip, uint8_t bus, uint8_t dc,
uint8_t res, uint8_t cs) {
uint8_t res, uint8_t cs, unsigned int spi_mode, uint32_t max_speed) {
user_data_t *user_data = init_user_data(u8g2);
user_data->gpio_chip = gpio_chip;
user_data->bus = bus;
user_data->spi_mode = spi_mode;
user_data->max_speed = max_speed;
u8x8_SetPin(u8g2_GetU8x8(u8g2), U8X8_PIN_DC, dc);
u8x8_SetPin(u8g2_GetU8x8(u8g2), U8X8_PIN_RESET, res);
u8x8_SetPin(u8g2_GetU8x8(u8g2), U8X8_PIN_CS, cs);
@ -219,7 +221,7 @@ void init_spi(u8x8_t *u8x8) {
/* 2: clock active low, data out on rising edge */
/* 3: clock active low, data out on falling edge */
int error = spi_open(spi_handles[user_data->bus], filename,
u8x8->display_info->spi_mode, 500000);
user_data->spi_mode, user_data->max_speed);
if (error < 0) {
fprintf(stderr, "spi_open(): %s\n",
spi_errmsg(spi_handles[user_data->bus]));

6
sys/arm-linux/port/u8g2port.h
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@ -32,6 +32,10 @@ struct user_data_struct {
uint8_t buffer[128];
// Nanosecond delay for U8X8_MSG_DELAY_I2C
unsigned long delay;
// SPI mode
unsigned int spi_mode;
// SPI max speed
uint32_t max_speed;
};
typedef struct user_data_struct user_data_t;
@ -44,7 +48,7 @@ void init_i2c_hw(u8g2_t *u8g2, uint8_t bus);
void init_i2c_sw(u8g2_t *u8g2, uint8_t gpio_chip, uint8_t scl, uint8_t sda,
uint8_t res, unsigned long delay);
void init_spi_hw(u8g2_t *u8g2, uint8_t gpio_chip, uint8_t bus, uint8_t dc,
uint8_t res, uint8_t cs);
uint8_t res, uint8_t cs, unsigned int spi_mode, uint32_t max_speed);
void init_spi_sw(u8g2_t *u8g2, uint8_t gpio_chip, uint8_t dc, uint8_t res,
uint8_t mosi, uint8_t sck, uint8_t cs, unsigned long delay);
void done_user_data(u8g2_t *u8g2);