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Merge pull request #17296 from fjmolinas/pr_nanosleep_deprecate

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sys/include/xtimer.h: deprecate nanosleep
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Alexandre Abadie 2021-12-01 07:34:02 +01:00 committed by GitHub
commit 8136a265d8
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4 changed files with 13 additions and 8 deletions
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8
drivers/include/soft_spi.h
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@ -14,7 +14,7 @@
* This module provides a software implemented Serial Peripheral Interface bus.
* It is intended to be used in situation where hardware spi is not available.
* The signatures of the functions are similar to the functions declared in spi.h
* The clock speed is approximated by using xtimer_nanosleep.
* The clock speed is approximated by using xtimer_usleep.
* Currently only the use of MOSI in master mode is implemented. Therefore receiving
* data from a slave is currently not possible.
* @{
@ -116,9 +116,9 @@ typedef enum {
* delay between two clock edges.
*/
typedef enum {
SOFT_SPI_CLK_100KHZ = 5000, /**< drive the SPI bus with less than 100kHz */
SOFT_SPI_CLK_400KHZ = 1250, /**< drive the SPI bus with less than 400kHz */
SOFT_SPI_CLK_DEFAULT = 0, /**< drive the SPI bus with maximum speed possible */
SOFT_SPI_CLK_100KHZ = 5, /**< drive the SPI bus with less than 100kHz */
SOFT_SPI_CLK_1MHZ = 1, /**< drive the SPI bus with less than 1MHz */
SOFT_SPI_CLK_DEFAULT = 0, /**< drive the SPI bus with maximum speed possible */
} soft_spi_clk_t;
/**

6
drivers/soft_spi/soft_spi.c
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@ -154,7 +154,7 @@ static inline uint8_t _transfer_one_byte(soft_spi_t bus, uint8_t out)
uint8_t bit = out >> 7;
gpio_write(soft_spi_config[bus].mosi_pin, bit);
xtimer_nanosleep(soft_spi_config[bus].soft_spi_clk);
xtimer_usleep(soft_spi_config[bus].soft_spi_clk);
gpio_toggle(soft_spi_config[bus].clk_pin);
out <<= 1; /*shift transfer register*/
@ -162,7 +162,7 @@ static inline uint8_t _transfer_one_byte(soft_spi_t bus, uint8_t out)
bit = gpio_read(soft_spi_config[bus].miso_pin);
out = bit ? (out | 0x01) : (out & 0xfe); /*set or delete bit 0*/
xtimer_nanosleep(soft_spi_config[bus].soft_spi_clk);
xtimer_usleep(soft_spi_config[bus].soft_spi_clk);
--i;
if (i > 0) {
gpio_toggle(soft_spi_config[bus].clk_pin);
@ -172,7 +172,7 @@ static inline uint8_t _transfer_one_byte(soft_spi_t bus, uint8_t out)
if (SOFT_SPI_MODE_0 == soft_spi_config[bus].soft_spi_mode ||
SOFT_SPI_MODE_2 == soft_spi_config[bus].soft_spi_mode) {
/* CPHA = 0 */
xtimer_nanosleep(soft_spi_config[bus].soft_spi_clk);
xtimer_usleep(soft_spi_config[bus].soft_spi_clk);
gpio_toggle(soft_spi_config[bus].clk_pin);
}

3
pkg/u8g2/contrib/u8x8_riotos.c
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@ -103,7 +103,8 @@ uint8_t u8x8_gpio_and_delay_riotos(u8x8_t *u8g2, uint8_t msg, uint8_t arg_int, v
xtimer_usleep(arg_int * 10);
break;
case U8X8_MSG_DELAY_100NANO:
xtimer_nanosleep(arg_int * 100);
/* not used in upstream so approximating to 1us should be fine */
xtimer_usleep(1);
break;
case U8X8_MSG_GPIO_CS:
if (u8x8_riot_ptr != NULL && gpio_is_valid(u8x8_riot_ptr->pin_cs)) {

4
sys/include/xtimer.h
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@ -176,6 +176,10 @@ static inline void xtimer_usleep64(uint64_t microseconds);
/**
* @brief Stop execution of a thread for some time
*
* @deprecated This function is deprecated as no XTIMER backend is currently
* configured to run at more than 1 MHz, making nanoseconds accuracy
* impossible to achieve.
*
* Don't expect nanosecond accuracy. As of now, this function just calls
* xtimer_usleep(nanoseconds/1000).
*