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stm32: Enable I2CTarget for STM32L4.

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STM32L4 uses the same I2C controller as STM32WB.  Change `defined(STM32WB)`
to `defined(STM32L4) || defined(STM32WB) ` in relevant files.

Also remove the dummy definition of I2C2_BASE for STM32L432xx.  It's now
provided by the dummy definition in `i2cslave.h`.

Signed-off-by: Chris Mason <c.mason@inchipdesign.com.au>
Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Chris Mason
2025-08-17 23:49:59 +10:00
committed by Damien George
parent 4db2cf09e0
commit fc2a851202
4 changed files with 4 additions and 8 deletions
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4
ports/stm32/i2c.c
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@@ -279,10 +279,6 @@ int i2c_write(i2c_t *i2c, const uint8_t *src, size_t len, size_t next_len) {
#elif defined(STM32L4)
#define APB1ENR APB1ENR1
#define RCC_APB1ENR_I2C1EN RCC_APB1ENR1_I2C1EN
#if defined(STM32L432xx)
// Not a real peripheral, only needed for i2c_id calculation in i2c_init.
#define I2C2_BASE (APB1PERIPH_BASE + 0x5800UL)
#endif
#endif
static uint16_t i2c_timeout_ms[MICROPY_HW_MAX_I2C];

2
ports/stm32/i2cslave.c
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@@ -76,7 +76,7 @@ void i2c_slave_irq_handler(i2c_slave_t *i2c) {
}
}
#elif defined(STM32F7) || defined(STM32H7) || defined(STM32WB)
#elif defined(STM32F7) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
void i2c_slave_init_helper(i2c_slave_t *i2c, int addr) {
i2c->CR1 = I2C_CR1_STOPIE | I2C_CR1_ADDRIE | I2C_CR1_RXIE | I2C_CR1_TXIE;

4
ports/stm32/i2cslave.h
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@@ -28,7 +28,7 @@
#include STM32_HAL_H
#if defined(STM32F4) || defined(STM32F7) || defined(STM32H7) || defined(STM32WB)
#if defined(STM32F4) || defined(STM32F7) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
#if !defined(I2C2_BASE)
// This MCU doesn't have I2C2_BASE, define it so that the i2c_idx calculation works.
@@ -63,7 +63,7 @@ static inline void i2c_slave_init(i2c_slave_t *i2c, int irqn, int irq_pri, int a
volatile uint32_t tmp = RCC->APB1ENR1; // Delay after enabling clock
(void)tmp;
}
#elif defined(STM32WB)
#elif defined(STM32L4) || defined(STM32WB)
RCC->APB1ENR1 |= 1 << (RCC_APB1ENR1_I2C1EN_Pos + i2c_idx);
volatile uint32_t tmp = RCC->APB1ENR1; // Delay after enabling clock
(void)tmp;

2
ports/stm32/mpconfigboard_common.h
View File

@@ -640,7 +640,7 @@
|| defined(MICROPY_HW_I2C3_SCL) || defined(MICROPY_HW_I2C4_SCL)
#define MICROPY_HW_ENABLE_HW_I2C (1)
#ifndef MICROPY_HW_ENABLE_HW_I2C_TARGET
#if defined(STM32F4) || defined(STM32F7) || defined(STM32H7) || defined(STM32WB)
#if defined(STM32F4) || defined(STM32F7) || defined(STM32H7) || defined(STM32L4) || defined(STM32WB)
#define MICROPY_HW_ENABLE_HW_I2C_TARGET (1)
#else
#define MICROPY_HW_ENABLE_HW_I2C_TARGET (0)