stm32f4_spi_read_rx(9)

💅 stm32f4_spi_read_rx(9) — Kernel API Manual 💅

okay bestie, welcome to the Kernel API Manual ✨ this one's a little function with one very important job, and honestly? it's giving "small but mighty." let's get into it 🫶

✨ NAME ✨

stm32f4_spi_read_rx — read bytes from the Receive Data Register 💖

🎀 SYNOPSIS 🎀

void stm32f4_spi_read_rx (struct stm32_spi *spi );

🌸 ARGUMENTS 🌸

• spi — pointer to the spi controller data structure 🦋 (yes, it's a pointer, and yes, it's pointing at the spi controller's data structure — that's the whole vibe)

🦋 DESCRIPTION 🦋

So here's the tea ☕ — the write into rx_buf depends on the remaining bytes, and that's literally on purpose. It's how we avoid writing beyond the end of rx_buf. no cap, that's the whole safety motto: do not go past the end of the buffer 😭💀

🔥 SEE ALSO 🔥

like, go read these next, iykyk 👑

• Kernel file ./drivers/spi/spi-stm32.c
• struct stm32_spi_reg(9)
• struct stm32_spi_regspec(9)
• struct stm32_spi_cfg(9)
• struct stm32_spi(9)
• stm32h7_spi_get_fifo_size(9)
• stm32f4_spi_get_bpw_mask(9)
• stm32f7_spi_get_bpw_mask(9)
• stm32h7_spi_get_bpw_mask(9)
• stm32mp25_spi_get_bpw_mask(9)
• stm32_spi_prepare_mbr(9)
• stm32h7_spi_prepare_fthlv(9)
• stm32f4_spi_write_tx(9)
• stm32f7_spi_write_tx(9)
• stm32h7_spi_write_txfifo(9)
• stm32f7_spi_read_rx(9)
• stm32h7_spi_read_rxfifo(9)
• stm32_spi_enable(9)
• stm32fx_spi_disable(9)
• stm32h7_spi_disable(9)
• stm32_spi_can_dma(9)
• stm32fx_spi_irq_event(9)
• stm32fx_spi_irq_thread(9)
• stm32h7_spi_irq_thread(9)
• stm32_spi_prepare_msg(9)
• stm32fx_spi_dma_tx_cb(9)
• stm32_spi_dma_rx_cb(9)
• stm32_spi_dma_config(9)
• stm32fx_spi_transfer_one_irq(9)
• stm32h7_spi_transfer_one_poll(9)
• stm32h7_spi_transfer_one_irq(9)
• stm32fx_spi_transfer_one_dma_start(9)
• stm32f7_spi_transfer_one_dma_start(9)
• stm32h7_spi_transfer_one_dma_start(9)
• stm32_spi_prepare_rx_dma_mdma_chaining(9)
• stm32_spi_transfer_one_dma(9)
• stm32f4_spi_set_bpw(9)
• stm32f7_spi_set_bpw(9)
• stm32h7_spi_set_bpw(9)
• stm32_spi_set_mbr(9)
• stm32_spi_communication_type(9)
• stm32fx_spi_set_mode(9)
• stm32h7_spi_set_mode(9)
• stm32h7_spi_data_idleness(9)
• stm32h7_spi_number_of_data(9)
• stm32_spi_transfer_one_setup(9)
• stm32_spi_can_poll(9)
• stm32_spi_transfer_one(9)
• stm32_spi_unprepare_msg(9)
• stm32fx_spi_config(9)
• stm32h7_spi_config(9)

and that's the whole page, bestie 🎀 before you go — this one lives in ./drivers/spi and it's dated October 2026 ⭐ mwah, slay, read your kernel docs 💜