echoplayer: initialize I2C bus
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commit 4af17687959b7ae3929ddb95666a536ee6cc289c Author: Aidan MacDonald <[email protected]> Date: Sun Feb 8 18:08:18 2026 +0000 echoplayer: initialize I2C bus Change-Id: I159d1a2c97b02b5e7aa61452098b05d9d854dc89 diff --git a/firmware/SOURCES b/firmware/SOURCES index fbd92742ba..16209d3f78 100644 --- a/firmware/SOURCES +++ b/firmware/SOURCES @@ -1953,6 +1953,7 @@ target/arm/stm32/echoplayer/audiohw-echoplayer.c target/arm/stm32/echoplayer/backlight-echoplayer.c target/arm/stm32/echoplayer/button-echoplayer.c target/arm/stm32/echoplayer/clock-echoplayer.c +target/arm/stm32/echoplayer/i2c-echoplayer.c target/arm/stm32/echoplayer/lcd-echoplayer.c target/arm/stm32/echoplayer/power-echoplayer.c target/arm/stm32/echoplayer/sdmmc-echoplayer.c diff --git a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c index d42c12ae5f..f83314a2e6 100644 --- a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c +++ b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.c @@ -165,6 +165,7 @@ INIT_ATTR static void init_periph_clock(void) { reg_writef(RCC_D1CCIPR, SDMMCSEL_V(PLL1Q)); reg_writef(RCC_D2CCIP1R, SPI45SEL_V(HSE)); + reg_writef(RCC_D2CCIP2R, I2C123SEL_V(HSI)); /* Enable AXI SRAM in sleep mode to allow DMA'ing out of it */ reg_writef(RCC_AHB3LPENR, AXISRAMEN(1)); @@ -203,3 +204,11 @@ const struct stm32_clock spi5_ker_clock = { .lpen_reg = ITA_RCC_APB2LPENR, .lpen_bit = BM_RCC_APB2ENR_SPI5EN, }; + +const struct stm32_clock i2c1_ker_clock = { + .frequency = STM32_HSI_FREQ, + .en_reg = ITA_RCC_APB1LENR, + .en_bit = BM_RCC_APB1LENR_I2C1EN, + .lpen_reg = ITA_RCC_APB1LLPENR, + .lpen_bit = BM_RCC_APB1LENR_I2C1EN, +}; diff --git a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h index e6f3624537..d75b294e93 100644 --- a/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h +++ b/firmware/target/arm/stm32/echoplayer/clock-echoplayer.h @@ -28,5 +28,6 @@ void echoplayer_clock_init(void) INIT_ATTR; extern struct stm32_clock sdmmc1_ker_clock; extern struct stm32_clock ltdc_ker_clock; extern struct stm32_clock spi5_ker_clock; +extern struct stm32_clock i2c1_ker_clock; #endif /* __CLOCK_ECHOPLAYER_H__ */ diff --git a/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.c b/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.c new file mode 100644 index 0000000000..39cdea33ab --- /dev/null +++ b/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.c @@ -0,0 +1,50 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2026 by Aidan MacDonald + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "i2c-stm32h7.h" +#include "clock-echoplayer.h" +#include "nvic-arm.h" +#include "regs/stm32h743/i2c.h" + +static const struct stm32_i2c_config i2c1_conf INITDATA_ATTR = { + .instance = ITA_I2C1, + .ker_clock = &i2c1_ker_clock, + .bus_freq_hz = 400000, + .scl_low_min_ns = 1300, + .scl_high_min_ns = 600, + .t_vd_dat_max_ns = 900, + .t_su_dat_max_ns = 100, + .rise_time_max_ns = 300, + .fall_time_max_ns = 300, +}; + +struct stm32_i2c_controller i2c1_ctl; + +void i2c_init(void) +{ + stm32_i2c_init(&i2c1_ctl, &i2c1_conf); + nvic_enable_irq(NVIC_IRQN_I2C1_EV); + nvic_enable_irq(NVIC_IRQN_I2C1_ER); +} + +void i2c1_irq_handler(void) +{ + stm32_i2c_irq_handler(&i2c1_ctl); +} diff --git a/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.h b/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.h new file mode 100644 index 0000000000..7b0ef57eeb --- /dev/null +++ b/firmware/target/arm/stm32/echoplayer/i2c-echoplayer.h @@ -0,0 +1,28 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2026 by Aidan MacDonald + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#ifndef __I2C_ECHOPLAYER_H__ +#define __I2C_ECHOPLAYER_H__ + +#include "i2c-stm32h7.h" + +extern struct stm32_i2c_controller i2c1_ctl; + +#endif /* __I2C_ECHOPLAYER_H__ */ diff --git a/firmware/target/arm/stm32/i2c-stm32h7.c b/firmware/target/arm/stm32/i2c-stm32h7.c index 73435663c4..1d06290f03 100644 --- a/firmware/target/arm/stm32/i2c-stm32h7.c +++ b/firmware/target/arm/stm32/i2c-stm32h7.c @@ -306,8 +306,3 @@ void stm32_i2c_irq_handler(struct stm32_i2c_controller *ctl) } } } - -/* TODO: move to target */ -void i2c_init(void) -{ -} -- rockbox-cvs mailing list [email protected] https://lists.haxx.se/mailman/listinfo/rockbox-cvs