summaryrefslogtreecommitdiff
path: root/platforms/chibios/drivers/spi_master.c
diff options
context:
space:
mode:
Diffstat (limited to 'platforms/chibios/drivers/spi_master.c')
-rw-r--r--platforms/chibios/drivers/spi_master.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/platforms/chibios/drivers/spi_master.c b/platforms/chibios/drivers/spi_master.c
deleted file mode 100644
index c3ab0623f0..0000000000
--- a/platforms/chibios/drivers/spi_master.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/* Copyright 2020 Nick Brassel (tzarc)
- *
- * 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 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-#include "spi_master.h"
-
-#include "timer.h"
-
-static pin_t currentSlavePin = NO_PIN;
-
-#if defined(K20x) || defined(KL2x) || defined(RP2040)
-static SPIConfig spiConfig = {NULL, 0, 0, 0};
-#else
-static SPIConfig spiConfig = {false, NULL, 0, 0, 0, 0};
-#endif
-
-__attribute__((weak)) void spi_init(void) {
- static bool is_initialised = false;
- if (!is_initialised) {
- is_initialised = true;
-
- // Try releasing special pins for a short time
- setPinInput(SPI_SCK_PIN);
- setPinInput(SPI_MOSI_PIN);
- setPinInput(SPI_MISO_PIN);
-
- chThdSleepMilliseconds(10);
-#if defined(USE_GPIOV1)
- palSetPadMode(PAL_PORT(SPI_SCK_PIN), PAL_PAD(SPI_SCK_PIN), SPI_SCK_PAL_MODE);
- palSetPadMode(PAL_PORT(SPI_MOSI_PIN), PAL_PAD(SPI_MOSI_PIN), SPI_MOSI_PAL_MODE);
- palSetPadMode(PAL_PORT(SPI_MISO_PIN), PAL_PAD(SPI_MISO_PIN), SPI_MISO_PAL_MODE);
-#else
- palSetPadMode(PAL_PORT(SPI_SCK_PIN), PAL_PAD(SPI_SCK_PIN), SPI_SCK_FLAGS);
- palSetPadMode(PAL_PORT(SPI_MOSI_PIN), PAL_PAD(SPI_MOSI_PIN), SPI_MOSI_FLAGS);
- palSetPadMode(PAL_PORT(SPI_MISO_PIN), PAL_PAD(SPI_MISO_PIN), SPI_MISO_FLAGS);
-#endif
- spiStop(&SPI_DRIVER);
- currentSlavePin = NO_PIN;
- }
-}
-
-bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor) {
- if (currentSlavePin != NO_PIN || slavePin == NO_PIN) {
- return false;
- }
-
-#if !(defined(WB32F3G71xx) || defined(WB32FQ95xx))
- uint16_t roundedDivisor = 2;
- while (roundedDivisor < divisor) {
- roundedDivisor <<= 1;
- }
-
- if (roundedDivisor < 2 || roundedDivisor > 256) {
- return false;
- }
-#endif
-
-#if defined(K20x) || defined(KL2x)
- spiConfig.tar0 = SPIx_CTARn_FMSZ(7) | SPIx_CTARn_ASC(1);
-
- if (lsbFirst) {
- spiConfig.tar0 |= SPIx_CTARn_LSBFE;
- }
-
- switch (mode) {
- case 0:
- break;
- case 1:
- spiConfig.tar0 |= SPIx_CTARn_CPHA;
- break;
- case 2:
- spiConfig.tar0 |= SPIx_CTARn_CPOL;
- break;
- case 3:
- spiConfig.tar0 |= SPIx_CTARn_CPHA | SPIx_CTARn_CPOL;
- break;
- }
-
- switch (roundedDivisor) {
- case 2:
- spiConfig.tar0 |= SPIx_CTARn_BR(0);
- break;
- case 4:
- spiConfig.tar0 |= SPIx_CTARn_BR(1);
- break;
- case 8:
- spiConfig.tar0 |= SPIx_CTARn_BR(3);
- break;
- case 16:
- spiConfig.tar0 |= SPIx_CTARn_BR(4);
- break;
- case 32:
- spiConfig.tar0 |= SPIx_CTARn_BR(5);
- break;
- case 64:
- spiConfig.tar0 |= SPIx_CTARn_BR(6);
- break;
- case 128:
- spiConfig.tar0 |= SPIx_CTARn_BR(7);
- break;
- case 256:
- spiConfig.tar0 |= SPIx_CTARn_BR(8);
- break;
- }
-
-#elif defined(HT32)
- spiConfig.cr0 = SPI_CR0_SELOEN;
- spiConfig.cr1 = SPI_CR1_MODE | 8; // 8 bits and in master mode
-
- if (lsbFirst) {
- spiConfig.cr1 |= SPI_CR1_FIRSTBIT;
- }
-
- switch (mode) {
- case 0:
- spiConfig.cr1 |= SPI_CR1_FORMAT_MODE0;
- break;
- case 1:
- spiConfig.cr1 |= SPI_CR1_FORMAT_MODE1;
- break;
- case 2:
- spiConfig.cr1 |= SPI_CR1_FORMAT_MODE2;
- break;
- case 3:
- spiConfig.cr1 |= SPI_CR1_FORMAT_MODE3;
- break;
- }
-
- spiConfig.cpr = (roundedDivisor - 1) >> 1;
-
-#elif defined(WB32F3G71xx) || defined(WB32FQ95xx)
- if (!lsbFirst) {
- osalDbgAssert(lsbFirst != FALSE, "unsupported lsbFirst");
- }
-
- if (divisor < 1) {
- return false;
- }
-
- spiConfig.SPI_BaudRatePrescaler = (divisor << 2);
-
- switch (mode) {
- case 0:
- spiConfig.SPI_CPHA = SPI_CPHA_1Edge;
- spiConfig.SPI_CPOL = SPI_CPOL_Low;
- break;
- case 1:
- spiConfig.SPI_CPHA = SPI_CPHA_2Edge;
- spiConfig.SPI_CPOL = SPI_CPOL_Low;
- break;
- case 2:
- spiConfig.SPI_CPHA = SPI_CPHA_1Edge;
- spiConfig.SPI_CPOL = SPI_CPOL_High;
- break;
- case 3:
- spiConfig.SPI_CPHA = SPI_CPHA_2Edge;
- spiConfig.SPI_CPOL = SPI_CPOL_High;
- break;
- }
-#elif defined(MCU_RP)
- if (lsbFirst) {
- osalDbgAssert(lsbFirst == false, "RP2040s PrimeCell SPI implementation does not support sending LSB first.");
- }
-
- // Motorola frame format and 8bit transfer data size.
- spiConfig.SSPCR0 = SPI_SSPCR0_FRF_MOTOROLA | SPI_SSPCR0_DSS_8BIT;
- // Serial output clock = (ck_sys or ck_peri) / (SSPCPSR->CPSDVSR * (1 +
- // SSPCR0->SCR)). SCR is always set to zero, as QMK SPI API expects the
- // passed divisor to be the only value to divide the input clock by.
- spiConfig.SSPCPSR = roundedDivisor; // Even number from 2 to 254
-
- switch (mode) {
- case 0:
- spiConfig.SSPCR0 &= ~SPI_SSPCR0_SPO; // Clock polarity: low
- spiConfig.SSPCR0 &= ~SPI_SSPCR0_SPH; // Clock phase: sample on first edge
- break;
- case 1:
- spiConfig.SSPCR0 &= ~SPI_SSPCR0_SPO; // Clock polarity: low
- spiConfig.SSPCR0 |= SPI_SSPCR0_SPH; // Clock phase: sample on second edge transition
- break;
- case 2:
- spiConfig.SSPCR0 |= SPI_SSPCR0_SPO; // Clock polarity: high
- spiConfig.SSPCR0 &= ~SPI_SSPCR0_SPH; // Clock phase: sample on first edge
- break;
- case 3:
- spiConfig.SSPCR0 |= SPI_SSPCR0_SPO; // Clock polarity: high
- spiConfig.SSPCR0 |= SPI_SSPCR0_SPH; // Clock phase: sample on second edge transition
- break;
- }
-#else
- spiConfig.cr1 = 0;
-
- if (lsbFirst) {
- spiConfig.cr1 |= SPI_CR1_LSBFIRST;
- }
-
- switch (mode) {
- case 0:
- break;
- case 1:
- spiConfig.cr1 |= SPI_CR1_CPHA;
- break;
- case 2:
- spiConfig.cr1 |= SPI_CR1_CPOL;
- break;
- case 3:
- spiConfig.cr1 |= SPI_CR1_CPHA | SPI_CR1_CPOL;
- break;
- }
-
- switch (roundedDivisor) {
- case 2:
- break;
- case 4:
- spiConfig.cr1 |= SPI_CR1_BR_0;
- break;
- case 8:
- spiConfig.cr1 |= SPI_CR1_BR_1;
- break;
- case 16:
- spiConfig.cr1 |= SPI_CR1_BR_1 | SPI_CR1_BR_0;
- break;
- case 32:
- spiConfig.cr1 |= SPI_CR1_BR_2;
- break;
- case 64:
- spiConfig.cr1 |= SPI_CR1_BR_2 | SPI_CR1_BR_0;
- break;
- case 128:
- spiConfig.cr1 |= SPI_CR1_BR_2 | SPI_CR1_BR_1;
- break;
- case 256:
- spiConfig.cr1 |= SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0;
- break;
- }
-#endif
-
- currentSlavePin = slavePin;
- spiConfig.ssport = PAL_PORT(slavePin);
- spiConfig.sspad = PAL_PAD(slavePin);
-
- setPinOutput(slavePin);
- spiStart(&SPI_DRIVER, &spiConfig);
- spiSelect(&SPI_DRIVER);
-
- return true;
-}
-
-spi_status_t spi_write(uint8_t data) {
- uint8_t rxData;
- spiExchange(&SPI_DRIVER, 1, &data, &rxData);
-
- return rxData;
-}
-
-spi_status_t spi_read(void) {
- uint8_t data = 0;
- spiReceive(&SPI_DRIVER, 1, &data);
-
- return data;
-}
-
-spi_status_t spi_transmit(const uint8_t *data, uint16_t length) {
- spiSend(&SPI_DRIVER, length, data);
- return SPI_STATUS_SUCCESS;
-}
-
-spi_status_t spi_receive(uint8_t *data, uint16_t length) {
- spiReceive(&SPI_DRIVER, length, data);
- return SPI_STATUS_SUCCESS;
-}
-
-void spi_stop(void) {
- if (currentSlavePin != NO_PIN) {
- spiUnselect(&SPI_DRIVER);
- spiStop(&SPI_DRIVER);
- currentSlavePin = NO_PIN;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 16:00:06 +0000