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Merge branch 'ourairquality-iomux-set-func'

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This commit is contained in:
sheinz 2016-08-17 14:37:16 +03:00
commit b07c34b863
4 changed files with 24 additions and 24 deletions
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29
core/esp_spi.c
View file

@ -23,39 +23,34 @@
#define _SPI1_SCK_GPIO 14
#define _SPI1_CS0_GPIO 15
#define _SPI0_FUNC 1
#define _SPI1_FUNC 2
#define _SPI0_FUNC IOMUX_FUNC(1)
#define _SPI1_FUNC IOMUX_FUNC(2)
#define _SPI_BUF_SIZE 64
static bool _minimal_pins[2] = {false, false};
inline static void _set_pin_function(uint8_t pin, uint32_t function)
{
iomux_set_function(gpio_to_iomux(pin), function);
}
bool spi_init(uint8_t bus, spi_mode_t mode, uint32_t freq_divider, bool msb, spi_endianness_t endianness, bool minimal_pins)
{
switch (bus)
{
case 0:
_set_pin_function(_SPI0_MISO_GPIO, _SPI0_FUNC);
_set_pin_function(_SPI0_MOSI_GPIO, _SPI0_FUNC);
_set_pin_function(_SPI0_SCK_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_MISO_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_MOSI_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_SCK_GPIO, _SPI0_FUNC);
if (!minimal_pins)
{
_set_pin_function(_SPI0_HD_GPIO, _SPI0_FUNC);
_set_pin_function(_SPI0_WP_GPIO, _SPI0_FUNC);
_set_pin_function(_SPI0_CS0_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_HD_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_WP_GPIO, _SPI0_FUNC);
gpio_set_iomux_function(_SPI0_CS0_GPIO, _SPI0_FUNC);
}
break;
case 1:
_set_pin_function(_SPI1_MISO_GPIO, _SPI1_FUNC);
_set_pin_function(_SPI1_MOSI_GPIO, _SPI1_FUNC);
_set_pin_function(_SPI1_SCK_GPIO, _SPI1_FUNC);
gpio_set_iomux_function(_SPI1_MISO_GPIO, _SPI1_FUNC);
gpio_set_iomux_function(_SPI1_MOSI_GPIO, _SPI1_FUNC);
gpio_set_iomux_function(_SPI1_SCK_GPIO, _SPI1_FUNC);
if (!minimal_pins)
_set_pin_function(_SPI1_CS0_GPIO, _SPI1_FUNC);
gpio_set_iomux_function(_SPI1_CS0_GPIO, _SPI1_FUNC);
break;
default:
return false;

10
core/include/esp/gpio.h
View file

@ -143,6 +143,16 @@ static inline gpio_inttype_t gpio_get_interrupt(const uint8_t gpio_num)
return (gpio_inttype_t)FIELD2VAL(GPIO_CONF_INTTYPE, GPIO.CONF[gpio_num]);
}
/* Set GPIO I/O Mux function.
* The 'func' is an IOMUX_GPIO<n>_FUNC_<function> value, see iomux_regs.h
*/
inline static void gpio_set_iomux_function(const uint8_t gpio_num, uint32_t func)
{
uint8_t iomux_num = gpio_to_iomux(gpio_num);
uint32_t prev = IOMUX.PIN[iomux_num] & ~IOMUX_PIN_FUNC_MASK;
IOMUX.PIN[iomux_num] = func | prev;
}
#ifdef __cplusplus
}
#endif

4
core/include/esp/iomux.h
View file

@ -82,8 +82,8 @@ inline static void iomux_set_pullup_flags(uint8_t iomux_num, uint32_t pullup_fla
inline static void iomux_set_gpio_function(uint8_t gpio_number, bool output_enable)
{
const uint8_t iomux_num = gpio_to_iomux(gpio_number);
const uint32_t func = iomux_num > 11 ? 0 : 3;
iomux_set_function(iomux_num, IOMUX_FUNC(func));
const uint32_t func = iomux_num > 11 ? IOMUX_FUNC(0) : IOMUX_FUNC(3);
iomux_set_function(iomux_num, func);
iomux_set_direction_flags(iomux_num, output_enable ? IOMUX_PIN_OUTPUT_ENABLE : 0);
}

5
core/include/esp/iomux_regs.h
View file

@ -47,11 +47,6 @@ _Static_assert(sizeof(struct IOMUX_REGS) == 0x44, "IOMUX_REGS is the wrong size"
/* WARNING: Macro evaluates argument twice */
#define IOMUX_FUNC(val) (VAL2FIELD_M(IOMUX_PIN_FUNC_LOW, val) | VAL2FIELD_M(IOMUX_PIN_FUNC_HIGH, val))
/* WARNING: Macro evaluates argument twice */
#define IOMUX_FUNC_VALUE(regbits) (FIELD2VAL(IOMUX_PIN_FUNC_LOW, regbits) | FIELD2VAL(IOMUX_PIN_FUNC_HIGH, regbits))
#define IOMUX_SET_FUNC(regbits, funcval) (((regbits) & ~IOMUX_PIN_FUNC_MASK) | (funcval))
#define IOMUX_GPIO0 IOMUX.PIN[12]
#define IOMUX_GPIO1 IOMUX.PIN[5]
#define IOMUX_GPIO2 IOMUX.PIN[13]