8000 chore(U0): add I2C support · stm32duino/Arduino_Core_STM32@8a39aef · GitHub
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Commit 8a39aef

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fpistmfpistm
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chore(U0): add I2C support
Signed-off-by: Frederic Pillon <frederic.pillon@st.com>
1 parent 6596750 commit 8a39aef

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2 files changed

+60
-28
lines changed

2 files changed

+60
-28
lines changed

‎libraries/Wire/src/utility/twi.c

Lines changed: 41 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -686,9 +686,10 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
686686
__HAL_RCC_I2C1_RELEASE_RESET();
687687

688688
obj->irq = I2C1_EV_IRQn;
689-
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
689+
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
690+
!defined(STM32L0xx) && !defined(STM32U0xx)
690691
obj->irqER = I2C1_ER_IRQn;
691-
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx */
692+
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
692693
i2c_handles[I2C1_INDEX] = handle;
693694
}
694695
#endif // I2C1_BASE
@@ -699,9 +700,10 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
699700
__HAL_RCC_I2C2_FORCE_RESET();
700701
__HAL_RCC_I2C2_RELEASE_RESET();
701702
obj->irq = I2C2_EV_IRQn;
702-
#if !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
703+
#if !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx) && \
704+
!defined(STM32U0xx)
703705
obj->irqER = I2C2_ER_IRQn;
704-
#endif /* !STM32F0xx && !STM32G0xx && !STM32L0xx */
706+
#endif /* !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
705707
i2c_handles[I2C2_INDEX] = handle;
706708
}
707709
#endif // I2C2_BASE
@@ -712,9 +714,9 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
712714
__HAL_RCC_I2C3_FORCE_RESET();
713715
__HAL_RCC_I2C3_RELEASE_RESET();
714716
obj->irq = I2C3_EV_IRQn;
715-
#if !defined(STM32G0xx) && !defined(STM32L0xx)
717+
#if !defined(STM32G0xx) && !defined(STM32L0xx) && !defined(STM32U0xx)
716718
obj->irqER = I2C3_ER_IRQn;
717-
#endif /* !STM32G0xx && !STM32L0xx */
719+
#endif /* !STM32G0xx && !STM32L0xx && !STM32U0xx*/
718720
i2c_handles[I2C3_INDEX] = handle;
719721
}
720722
#endif // I2C3_BASE
@@ -725,7 +727,9 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
725727
__HAL_RCC_I2C4_FORCE_RESET();
726728
__HAL_RCC_I2C4_RELEASE_RESET();
727729
obj->irq = I2C4_EV_IRQn;
730+
#if !defined(STM32U0xx)
728731
obj->irqER = I2C4_ER_IRQn;
732+
#endif /* !STM32U0xx */
729733
i2c_handles[I2C4_INDEX] = handle;
730734
}
731735
#endif // I2C4_BASE
@@ -780,10 +784,11 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
780784

781785
HAL_NVIC_SetPriority(obj->irq, I2C_IRQ_PRIO, I2C_IRQ_SUBPRIO);
782786
HAL_NVIC_EnableIRQ(obj->irq);
783-
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
787+
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
788+
!defined(STM32L0xx) && !defined(STM32U0xx)
784789
HAL_NVIC_SetPriority(obj->irqER, I2C_IRQ_PRIO, I2C_IRQ_SUBPRIO);
785790
HAL_NVIC_EnableIRQ(obj->irqER);
786-
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx */
791+
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
787792

788793
/* Init the I2C */
789794
if (HAL_I2C_Init(handle) != HAL_OK) {
@@ -807,9 +812,10 @@ void i2c_custom_init(i2c_t *obj, uint32_t timing, uint32_t addressingMode, uint3
807812
void i2c_deinit(i2c_t *obj)
808813
{
809814
HAL_NVIC_DisableIRQ(obj->irq);
810-
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
815+
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
816+
!defined(STM32L0xx) && !defined(STM32U0xx)
811817
HAL_NVIC_DisableIRQ(obj->irqER);
812-
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx */
818+
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
813819
HAL_I2C_DeInit(&(obj->handle));
814820
/* Reset I2C GPIO pins as INPUT_ANALOG */
815821
pin_function(obj->scl, STM_PIN_DATA(STM_MODE_ANALOG, GPIO_NOPULL, 0));
@@ -1232,12 +1238,14 @@ void I2C1_EV_IRQHandler(void)
12321238
{
12331239
I2C_HandleTypeDef *handle = i2c_handles[I2C1_INDEX];
12341240
HAL_I2C_EV_IRQHandler(handle);
1235-
#if defined(STM32C0xx) || defined(STM32F0xx) || defined(STM32G0xx) || defined(STM32L0xx)
1241+
#if defined(STM32C0xx) || defined(STM32F0xx) || defined(STM32G0xx) || \
1242+
defined(STM32L0xx) || defined(STM32U0xx)
12361243
HAL_I2C_ER_IRQHandler(handle);
1237-
#endif /* STM32C0xx || STM32F0xx || STM32G0xx || STM32L0xx */
1244+
#endif /* STM32C0xx || STM32F0xx || STM32G0xx || STM32L0xx || STM32U0xx*/
12381245
}
12391246

1240-
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
1247+
#if !defined(STM32C0xx) && !defined(STM32F0xx) && !defined(STM32G0xx) && \
1248+
!defined(STM32L0xx) && !defined(STM32U0xx)
12411249
/**
12421250
* @brief This function handles I2C1 interrupt.
12431251
* @param None
@@ -1248,7 +1256,7 @@ void I2C1_ER_IRQHandler(void)
12481256
I2C_HandleTypeDef *handle = i2c_handles[I2C1_INDEX];
12491257
HAL_I2C_ER_IRQHandler(handle);
12501258
}
1251-
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx */
1259+
#endif /* !STM32C0xx && !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
12521260
#endif // I2C1_BASE
12531261

12541262
#if defined(I2C2_BASE)
@@ -1259,7 +1267,7 @@ void I2C1_ER_IRQHandler(void)
12591267
*/
12601268
void I2C2_EV_IRQHandler(void)
12611269
{
1262-
#if defined(I2C3_BASE) && defined(STM32G0xx)
1270+
#if defined(I2C3_BASE) && (defined(STM32G0xx) || defined(STM32U0xx))
12631271
/* I2C2_3_IRQHandler */
12641272
I2C_HandleTypeDef *handle2 = i2c_handles[I2C2_INDEX];
12651273
I2C_HandleTypeDef *handle3 = i2c_handles[I2C3_INDEX];
@@ -1271,16 +1279,26 @@ void I2C2_EV_IRQHandler(void)
12711279
HAL_I2C_EV_IRQHandler(handle3);
12721280
HAL_I2C_ER_IRQHandler(handle3);
12731281
}
1282+
#if defined(I2C4_BASE)
1283+
/* I2C2_3_4_IRQHandler */
1284+
I2C_HandleTypeDef *handle4 = i2c_handles[I2C4_INDEX];
1285+
if (handle4) {
1286+
HAL_I2C_EV_IRQHandler(handle4);
1287+
HAL_I2C_ER_IRQHandler(handle4);
1288+
}
1289+
#endif /* I2C4_BASE */
12741290
#else
12751291
I2C_HandleTypeDef *handle = i2c_handles[I2C2_INDEX];
12761292
HAL_I2C_EV_IRQHandler(handle);
1277-
#if defined(STM32F0xx) || defined(STM32G0xx) || defined(STM32L0xx)
1293+
#if defined(STM32F0xx) || defined(STM32G0xx) || defined(STM32L0xx) || \
1294+
defined(STM32U0xx)
12781295
HAL_I2C_ER_IRQHandler(handle);
1279-
#endif /* STM32F0xx || STM32G0xx || STM32L0xx */
1296+
#endif /* STM32F0xx || STM32G0xx || STM32L0xx || STM32U0xx*/
12801297
#endif
12811298
}
12821299

1283-
#if !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx)
1300+
#if !defined(STM32F0xx) && !defined(STM32G0xx) && !defined(STM32L0xx) && \
1301+
!defined(STM32U0xx)
12841302
/**
12851303
* @brief This function handles I2C2 interrupt.
12861304
* @param None
@@ -1291,10 +1309,10 @@ void I2C2_ER_IRQHandler(void)
12911309
I2C_HandleTypeDef *handle = i2c_handles[I2C2_INDEX];
12921310
HAL_I2C_ER_IRQHandler(handle);
12931311
}
1294-
#endif /* !STM32F0xx && !STM32G0xx && !STM32L0xx */
1312+
#endif /* !STM32F0xx && !STM32G0xx && !STM32L0xx && !STM32U0xx */
12951313
#endif // I2C2_BASE
12961314

1297-
#if defined(I2C3_BASE) && !defined(STM32G0xx)
1315+
#if defined(I2C3_BASE) && !defined(STM32G0xx) && !defined(STM32U0xx)
12981316
/**
12991317
* @brief This function handles I2C3 interrupt.
13001318
* @param None
@@ -1321,9 +1339,9 @@ void I2C3_ER_IRQHandler(void)
13211339
HAL_I2C_ER_IRQHandler(handle);
13221340
}
13231341
#endif /* !STM32L0xx */
1324-
#endif /* I2C3_BASE && ! STM32G0xx */
1342+
#endif /* I2C3_BASE && ! STM32G0xx && !STM32U0xx */
13251343

1326-
#if defined(I2C4_BASE)
1344+
#if defined(I2C4_BASE) && !defined(STM32U0xx)
13271345
/**
13281346
* @brief This function handles I2C4 interrupt.
13291347
* @param None
@@ -1346,7 +1364,7 @@ void I2C4_ER_IRQHandler(void)
13461364
I2C_HandleTypeDef *handle = i2c_handles[I2C4_INDEX];
13471365
HAL_I2C_ER_IRQHandler(handle);
13481366
}
1349-
#endif // I2C4_BASE
1367+
#endif // I2C4_BASE && !STM32U0xx
13501368

13511369
#if defined(I2C5_BASE)
13521370
/**

‎libraries/Wire/src/utility/twi.h

Lines changed: 19 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -67,35 +67,49 @@ extern "C" {
6767
#error I2C buffer size cannot exceed 255
6868
#endif
6969

70-
/* Redefinition of IRQ for C0/F0/G0/L0 families */
71-
#if defined(STM32C0xx) || defined(STM32F0xx) || defined(STM32G0xx) || defined(STM32L0xx)
70+
/* Redefinition of IRQ for C0/F0/G0/L0/U0 families */
71+
#if defined(STM32C0xx) || defined(STM32F0xx) || defined(STM32G0xx) ||\
72+
defined(STM32L0xx) || defined(STM32U0xx)
7273
#if defined(I2C1_BASE)
7374
#define I2C1_EV_IRQn I2C1_IRQn
7475
#define I2C1_EV_IRQHandler I2C1_IRQHandler
7576
#endif // defined(I2C1_BASE)
7677
#if defined(I2C2_BASE)
77-
#if defined(STM32G0xx) && defined(I2C3_BASE)
78+
#if (defined(STM32G0xx) || defined(STM32U0xx)) && defined(I2C3_BASE)
79+
#if defined(I2C4_BASE)
80+
#define I2C2_EV_IRQn I2C2_3_4_IRQn
81+
#define I2C2_EV_IRQHandler I2C2_3_4_IRQHandler
82+
#else
7883
#define I2C2_EV_IRQn I2C2_3_IRQn
7984
#define I2C2_EV_IRQHandler I2C2_3_IRQHandler
85+
#endif // defined(I2C4_BASE)
8086
#else
8187
#define I2C2_EV_IRQn I2C2_IRQn
8288
#define I2C2_EV_IRQHandler I2C2_IRQHandler
8389
#endif
8490
#endif // defined(I2C2_BASE)
8591
#if defined(I2C3_BASE)
86-
#if defined(STM32G0xx)
92+
#if defined(STM32G0xx) || defined(STM32U0xx)
93+
#if defined(I2C4_BASE)
94+
#define I2C3_EV_IRQn I2C2_3_4_IRQn
95+
#else
8796
#define I2C3_EV_IRQn I2C2_3_IRQn
97+
#endif
8898
#else
8999
#define I2C3_EV_IRQn I2C3_IRQn
90100
#define I2C3_EV_IRQHandler I2C3_IRQHandler
91101
#endif
92102
#endif // defined(I2C3_BASE)
93103
/* Defined but no one has it */
94104
#if defined(I2C4_BASE)
105+
#if defined(STM32U0xx)
106+
#define I2C4_EV_IRQn I2C2_3_4_IRQn
107+
#else
95108
#define I2C4_EV_IRQn I2C4_IRQn
96109
#define I2C4_EV_IRQHandler I2C4_IRQHandler
110+
#endif
97111
#endif // defined(I2C4_BASE)
98-
#endif /* STM32C0xx || STM32F0xx || STM32G0xx || STM32L0xx */
112+
#endif /* STM32C0xx || STM32F0xx || STM32G0xx || STM32L0xx || STM32U0xx */
99113

100114
typedef struct i2c_s i2c_t;
101115

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