Commit d15fe5a6 authored by Damien George's avatar Damien George
Browse files

stmhal: Make I2C busses and their pins configurable in mpconfigboard.h.

parent 8892f71d
......@@ -14,7 +14,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (0)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (0)
#define MICROPY_HW_ENABLE_SPI3 (1)
......@@ -26,6 +25,12 @@
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)
// I2C busses
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// The Cerb40 has No LEDs
// The Cerb40 has No SDCard
......
......@@ -13,7 +13,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (0)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (1)
......@@ -25,6 +24,12 @@
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)
// I2C busses
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW/UBTN (Needs Jumper UBTN) is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN (pin_A0)
#define MICROPY_HW_USRSW_PULL (GPIO_NOPULL)
......
......@@ -17,7 +17,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_DAC (0)
#define MICROPY_HW_ENABLE_I2C1 (0)
#define MICROPY_HW_ENABLE_SPI1 (0)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (0)
......@@ -29,6 +28,10 @@
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)
// I2C busses
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN (pin_B11)
#define MICROPY_HW_USRSW_PULL (GPIO_NOPULL)
......
......@@ -14,7 +14,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (0)
......@@ -29,6 +28,14 @@
// The pyboard has a 32kHz crystal for the RTC
#define MICROPY_HW_RTC_USE_LSE (1)
// X-skin: X9=PB6=SCL, X10=PB7=SDA
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define MICROPY_HW_USRSW_PIN (pin_B3)
#define MICROPY_HW_USRSW_PULL (GPIO_PULLUP)
......
......@@ -13,7 +13,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (0)
......@@ -28,6 +27,14 @@
// The pyboard has a 32kHz crystal for the RTC
#define MICROPY_HW_RTC_USE_LSE (1)
// X-skin: X9=PB6=SCL, X10=PB7=SDA
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define MICROPY_HW_USRSW_PIN (pin_A13)
#define MICROPY_HW_USRSW_PULL (GPIO_PULLUP)
......
......@@ -13,7 +13,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (1)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (0)
......@@ -28,6 +27,14 @@
// The pyboard has a 32kHz crystal for the RTC
#define MICROPY_HW_RTC_USE_LSE (1)
// X-skin: X9=PB6=SCL, X10=PB7=SDA
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define MICROPY_HW_USRSW_PIN (pin_B3)
#define MICROPY_HW_USRSW_PULL (GPIO_PULLUP)
......
......@@ -13,7 +13,6 @@
#define MICROPY_HW_ENABLE_TIMER (1)
#define MICROPY_HW_ENABLE_SERVO (0)
#define MICROPY_HW_ENABLE_DAC (1)
#define MICROPY_HW_ENABLE_I2C1 (1)
#define MICROPY_HW_ENABLE_SPI1 (1)
#define MICROPY_HW_ENABLE_SPI2 (1)
#define MICROPY_HW_ENABLE_SPI3 (0)
......@@ -25,6 +24,12 @@
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)
// I2C busses
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)
// USRSW is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN (pin_A0)
#define MICROPY_HW_USRSW_PULL (GPIO_NOPULL)
......
......@@ -87,19 +87,30 @@
#define PYB_I2C_MASTER (0)
#define PYB_I2C_SLAVE (1)
#if MICROPY_HW_ENABLE_I2C1
#if defined(MICROPY_HW_I2C1_SCL)
I2C_HandleTypeDef I2CHandle1 = {.Instance = NULL};
#endif
#if defined(MICROPY_HW_I2C2_SCL)
I2C_HandleTypeDef I2CHandle2 = {.Instance = NULL};
#endif
#if defined(MICROPY_HW_I2C3_SCL)
I2C_HandleTypeDef I2CHandle3 = {.Instance = NULL};
#endif
void i2c_init0(void) {
// reset the I2C1 handles
#if MICROPY_HW_ENABLE_I2C1
#if defined(MICROPY_HW_I2C1_SCL)
memset(&I2CHandle1, 0, sizeof(I2C_HandleTypeDef));
I2CHandle1.Instance = I2C1;
#endif
#endif
#if defined(MICROPY_HW_I2C2_SCL)
memset(&I2CHandle2, 0, sizeof(I2C_HandleTypeDef));
I2CHandle2.Instance = I2C2;
#endif
#if defined(MICROPY_HW_I2C3_SCL)
memset(&I2CHandle3, 0, sizeof(I2C_HandleTypeDef));
I2CHandle3.Instance = I2C3;
#endif
}
void i2c_init(I2C_HandleTypeDef *i2c) {
......@@ -111,22 +122,27 @@ void i2c_init(I2C_HandleTypeDef *i2c) {
const pin_obj_t *pins[2];
if (0) {
#if MICROPY_HW_ENABLE_I2C1
#if defined(MICROPY_HW_I2C1_SCL)
} else if (i2c == &I2CHandle1) {
// X-skin: X9=PB6=SCL, X10=PB7=SDA
pins[0] = &pin_B6;
pins[1] = &pin_B7;
pins[0] = &MICROPY_HW_I2C1_SCL;
pins[1] = &MICROPY_HW_I2C1_SDA;
GPIO_InitStructure.Alternate = GPIO_AF4_I2C1;
// enable the I2C clock
__I2C1_CLK_ENABLE();
#endif
#endif
#if defined(MICROPY_HW_I2C2_SCL)
} else if (i2c == &I2CHandle2) {
// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
pins[0] = &pin_B10;
pins[1] = &pin_B11;
pins[0] = &MICROPY_HW_I2C2_SCL;
pins[1] = &MICROPY_HW_I2C2_SDA;
GPIO_InitStructure.Alternate = GPIO_AF4_I2C2;
// enable the I2C clock
__I2C2_CLK_ENABLE();
#endif
#if defined(MICROPY_HW_I2C3_SCL)
} else if (i2c == &I2CHandle3) {
pins[0] = &MICROPY_HW_I2C3_SCL;
pins[1] = &MICROPY_HW_I2C3_SDA;
GPIO_InitStructure.Alternate = GPIO_AF4_I2C3;
__I2C3_CLK_ENABLE();
#endif
} else {
// I2C does not exist for this board (shouldn't get here, should be checked by caller)
return;
......@@ -151,16 +167,24 @@ void i2c_init(I2C_HandleTypeDef *i2c) {
void i2c_deinit(I2C_HandleTypeDef *i2c) {
HAL_I2C_DeInit(i2c);
if (0) {
#if MICROPY_HW_ENABLE_I2C1
#if defined(MICROPY_HW_I2C1_SCL)
} else if (i2c->Instance == I2C1) {
__I2C1_FORCE_RESET();
__I2C1_RELEASE_RESET();
__I2C1_CLK_DISABLE();
#endif
#endif
#if defined(MICROPY_HW_I2C2_SCL)
} else if (i2c->Instance == I2C2) {
__I2C2_FORCE_RESET();
__I2C2_RELEASE_RESET();
__I2C2_CLK_DISABLE();
#endif
#if defined(MICROPY_HW_I2C3_SCL)
} else if (i2c->Instance == I2C3) {
__I2C3_FORCE_RESET();
__I2C3_RELEASE_RESET();
__I2C3_CLK_DISABLE();
#endif
}
}
......@@ -175,20 +199,31 @@ typedef struct _pyb_i2c_obj_t {
STATIC inline bool in_master_mode(pyb_i2c_obj_t *self) { return self->i2c->Init.OwnAddress1 == PYB_I2C_MASTER_ADDRESS; }
STATIC const pyb_i2c_obj_t pyb_i2c_obj[] = {
#if MICROPY_HW_ENABLE_I2C1
#if defined(MICROPY_HW_I2C1_SCL)
{{&pyb_i2c_type}, &I2CHandle1},
#else
{{&pyb_i2c_type}, NULL},
#endif
{{&pyb_i2c_type}, &I2CHandle2}
#endif
#if defined(MICROPY_HW_I2C2_SCL)
{{&pyb_i2c_type}, &I2CHandle2},
#endif
#if defined(MICROPY_HW_I2C3_SCL)
{{&pyb_i2c_type}, &I2CHandle3},
#endif
};
STATIC void pyb_i2c_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
pyb_i2c_obj_t *self = self_in;
uint i2c_num;
if (self->i2c->Instance == I2C1) { i2c_num = 1; }
else { i2c_num = 2; }
uint i2c_num = 0;
if (0) { }
#if defined(MICROPY_HW_I2C1_SCL)
else if (self->i2c->Instance == I2C1) { i2c_num = 1; }
#endif
#if defined(MICROPY_HW_I2C2_SCL)
else if (self->i2c->Instance == I2C2) { i2c_num = 2; }
#endif
#if defined(MICROPY_HW_I2C3_SCL)
else if (self->i2c->Instance == I2C3) { i2c_num = 3; }
#endif
if (self->i2c->State == HAL_I2C_STATE_RESET) {
mp_printf(print, "I2C(%u)", i2c_num);
......
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